Dell Latitude 3445 Chromebook User manual

Latitude 3445 Chromebook
Owner's Manual
Regulatory Model: P183G
Regulatory Type: P183G001
June 2023
Rev. A01

Notes, cautions, and warnings
NOTE: A NOTE indicates important information that helps you make better use of your product.
CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid
the problem.
WARNING: A WARNING indicates a potential for property damage, personal injury, or death.
© 2023 Dell Inc. or its subsidiaries. All rights reserved. Dell Technologies, Dell, and other trademarks are trademarks of Dell Inc. or its
subsidiaries. Other trademarks may be trademarks of their respective owners.

Chapter 1: Views of Latitude 3445 Chromebook.............................................................................6
Right....................................................................................................................................................................................... 6
Left..........................................................................................................................................................................................6
Top.......................................................................................................................................................................................... 7
Front....................................................................................................................................................................................... 8
Bottom................................................................................................................................................................................... 9
Service Tag........................................................................................................................................................................... 9
Battery charge and status light .....................................................................................................................................10
Chapter 2: Set up your Latitude 3445 Chromebook.......................................................................11
Chapter 3: Specifications of Latitude 3445 Chromebook..............................................................12
Dimensions and weight..................................................................................................................................................... 12
Processor............................................................................................................................................................................. 12
Chipset..................................................................................................................................................................................13
Operating system............................................................................................................................................................... 13
Memory.................................................................................................................................................................................13
External ports......................................................................................................................................................................14
Internal slots........................................................................................................................................................................ 14
Wireless module..................................................................................................................................................................14
Audio..................................................................................................................................................................................... 15
Storage................................................................................................................................................................................. 15
Media-card reader............................................................................................................................................................. 16
Keyboard.............................................................................................................................................................................. 16
Keyboard special keys....................................................................................................................................................... 17
Camera..................................................................................................................................................................................17
Touchpad............................................................................................................................................................................. 18
Power adapter.................................................................................................................................................................... 18
Battery..................................................................................................................................................................................19
Display..................................................................................................................................................................................20
Fingerprint reader (optional)........................................................................................................................................... 21
GPU—Integrated............................................................................................................................................................... 21
External display support................................................................................................................................................... 21
Hardware security..............................................................................................................................................................21
Operating and storage environment.............................................................................................................................22
Dell Support policy............................................................................................................................................................ 22
Chapter 4: Working inside your computer....................................................................................23
Safety instructions............................................................................................................................................................23
Before working inside your computer.....................................................................................................................23
Safety precautions...................................................................................................................................................... 24
Electrostatic discharge—ESD protection............................................................................................................. 24
ESD field service kit ...................................................................................................................................................25
Transporting sensitive components........................................................................................................................26
Contents
Contents 3

After working inside your computer....................................................................................................................... 26
Recommended tools......................................................................................................................................................... 26
Screw list.............................................................................................................................................................................26
Major components of Latitude 3445 Chromebook................................................................................................... 27
Chapter 5: Removing and installing Customer Replaceable Units (CRUs).................................... 30
Base cover.......................................................................................................................................................................... 30
Removing the base cover..........................................................................................................................................30
Installing the base cover............................................................................................................................................ 34
Solid-state drive................................................................................................................................................................ 35
Removing the M.2 2230 solid-state drive............................................................................................................. 35
Installing the M.2 2230 solid-state drive............................................................................................................... 36
Wireless card...................................................................................................................................................................... 38
Removing the wireless card...................................................................................................................................... 38
Installing the wireless card........................................................................................................................................ 39
Fan........................................................................................................................................................................................ 40
Removing the fan........................................................................................................................................................ 40
Installing the fan........................................................................................................................................................... 41
Chapter 6: Removing and installing Field Replaceable Units (FRUs)............................................ 42
Battery................................................................................................................................................................................. 42
Rechargeable Li-ion battery precautions...............................................................................................................42
Removing the battery.................................................................................................................................................42
Installing the battery...................................................................................................................................................43
Battery cable...................................................................................................................................................................... 44
Removing the battery cable......................................................................................................................................44
Installing the battery cable........................................................................................................................................46
Heat sink..............................................................................................................................................................................47
Removing the heat sink..............................................................................................................................................47
Installing the heat sink................................................................................................................................................48
Display assembly................................................................................................................................................................49
Removing the display assembly............................................................................................................................... 49
Installing the display assembly.................................................................................................................................. 51
Speakers.............................................................................................................................................................................. 52
Removing the speakers..............................................................................................................................................52
Installing the speakers................................................................................................................................................ 53
Display bezel.......................................................................................................................................................................55
Removing the display bezel...................................................................................................................................... 55
Installing the display bezel.........................................................................................................................................58
Display hinges..................................................................................................................................................................... 61
Removing the display hinges..................................................................................................................................... 61
Installing the display hinges.......................................................................................................................................62
Display panel.......................................................................................................................................................................63
Removing the display panel.......................................................................................................................................63
Installing the display panel.........................................................................................................................................65
System board..................................................................................................................................................................... 66
Removing the system board..................................................................................................................................... 66
Installing the system board....................................................................................................................................... 69
Camera module................................................................................................................................................................... 71
4Contents

Removing the camera module................................................................................................................................... 71
Installing the camera module.................................................................................................................................... 72
Display cable....................................................................................................................................................................... 74
Removing the display cable....................................................................................................................................... 74
Installing the display cable.........................................................................................................................................75
Display back cover and antenna assembly.................................................................................................................. 76
Removing the display back cover and antenna assembly..................................................................................76
Installing the display back cover and antenna assembly.................................................................................... 77
Palm-rest and keyboard assembly.................................................................................................................................78
Removing the palm-rest and keyboard assembly................................................................................................ 78
Installing the palm-rest and keyboard assembly.................................................................................................. 79
Chapter 7: Software.................................................................................................................... 81
Operating system...............................................................................................................................................................81
Operating system...............................................................................................................................................................81
ChromeOS......................................................................................................................................................................81
Verified Boot.................................................................................................................................................................82
Disk Partition Map.......................................................................................................................................................83
Developer and Recovery mode................................................................................................................................ 84
Coreboot and U-boot Custom Firmware............................................................................................................... 84
Chrome vs Chromium operating system................................................................................................................84
View system information................................................................................................................................................. 85
Chapter 8: Troubleshooting.........................................................................................................88
Handling swollen rechargeable Li-ion batteries......................................................................................................... 88
Chrome Shell (CROSH)................................................................................................................................................... 88
Recovering the operating system................................................................................................................................. 89
Wi-Fi power cycle..............................................................................................................................................................89
Drain residual flea power (perform hard reset)......................................................................................................... 89
Chrome OS Pre-Boot Diagnostics ......................................................................................................................... 90
Chapter 9: Getting help and contacting Dell................................................................................ 92
Contents 5

Views of Latitude 3445 Chromebook
Right
1. microSD-card slot
Reads from and writes to the microSD-card. The computer supports the following card types:
●Micro Secure Digital (mSD)
●Micro Secure Digital High Capacity (mSDHC)
●Micro Secure Digital Extended Capacity (mSDXC)
2. USB 3.2 Gen 1 (Type-C) port with Power Delivery/DisplayPort
Connect devices such as external storage devices, printers, and external displays.
Supports Power Delivery that enables two-way power supply between devices. Provides up to 15 W power output that
enables faster charging.
NOTE: A USB Type-C to DisplayPort adapter (sold separately) is required to connect a DisplayPort device.
3. Universal audio jack
Connect headphones or a headset (headphone and microphone combo).
4. Security-cable slot
Connect a security cable to prevent unauthorized movement of your computer.
Left
1. HDMI 2.0 port
Connect to a TV, external display, or another HDMI-in enabled device. Provides video and audio output.
2. USB 3.2 Gen 1 port with PowerShare
Connect devices such as external storage devices and printers.
Provides data transfer speeds up to 5 Gbps. PowerShare enables you to charge your USB devices even when your computer
is turned off.
1
6 Views of Latitude 3445 Chromebook

NOTE: If the charge on your computer’s battery is less than 10 percent, you must connect the power adapter to charge
your computer, and USB devices connected to the PowerShare port.
NOTE: If a USB device is connected to the PowerShare port before the computer is turned off or in hibernate state,
you must disconnect and connect it again to enable charging.
NOTE: Certain USB devices may not charge when the computer is turned off or in sleep state. In such cases, turn on
the computer to charge the device.
3. USB 3.2 Gen 1 (Type-C) port with Power Delivery/DisplayPort
Connect devices such as external storage devices, printers, and external displays.
Supports Power Delivery that enables two-way power supply between devices. Provides up to 15 W power output that
enables faster charging.
NOTE: A USB Type-C to DisplayPort adapter (sold separately) is required to connect a DisplayPort device.
4. Power and battery-status light
Indicates the power state and battery state of the computer.
AC mode:
●Fully charged: Off
●Charging: White
DC mode:
●S0-S5: Off
●Battery low (S0/S3): Amber
●Battery low (S5): Off
●Battery error (S0-S5): Blinking Amber, 1 second on/1 second off
NOTE: On certain computer models, the power and battery-status light are also used for diagnostics. For more
information, see the Troubleshooting section.
Top
1. Power button
Views of Latitude 3445 Chromebook 7

Press to turn on the computer if it is turned off, in sleep state, or in hibernate state.
When the computer is turned on, press the power button to put the computer into sleep state; press and hold the power
button for 10 seconds to force shut-down the computer.
2. Fingerprint reader (optional)
Press your finger on the fingerprint reader to log in to your computer. The fingerprint reader enables your computer to
recognize your fingerprints as a password.
NOTE: Configure the fingerprint reader to register your fingerprint and enable access.
3. Touchpad
Move your finger on the touchpad to move the mouse pointer. Tap to left-click and two fingers tap to right-click.
Front
1. Microphones (2)
Provide digital sound input for audio recording, voice calls, and so on.
2. Camera
Enables you to video chat, capture photos, and record videos.
3. Camera-status light
Turns on when the camera is in use.
8Views of Latitude 3445 Chromebook

Bottom
1. Speakers
Provide audio output.
2. Air vents
Air vents provide ventilation for your computer. Clogged air vents can cause overheating and can affect your computer's
performance and potentially cause hardware issues. Keep the air vents clear of obstructions and clean them regularly to
prevent build-up of dust and dirt. For more information about cleaning air vents, search for articles in Knowledge Base
Resource at www.dell.com/support.
3. Service Tag label
The Service Tag is a unique alphanumeric identifier that enables Dell service technicians to identify the hardware
components in your computer and access warranty information.
Service Tag
The service tag is a unique alphanumeric identifier that allows Dell service technicians to identify the hardware components in
your computer and access warranty information.
Views of Latitude 3445 Chromebook 9

Battery charge and status light
The following table lists the battery charge and status light behavior of your Latitude 3445 Chromebook.
Table 1. Battery charge and status light behavior
Power Source LED Behavior System Power State Battery Charge Level
AC Adapter Off S0 - S5 Fully Charged
AC Adapter Solid White S0 - S5 < Fully Charged
Battery Off S4, S5 < 10%
Battery Off S0 - S5 > 10%
Battery Solid Amber (590+/-3 nm) S0 - S3 < 10%
●S0 (ON) - System is turned on.
●S4 (Hibernate) - The system consumes the least power compared to all other sleep states. The system is almost at an OFF
state, expect for a trickle power. The context data is written to hard drive.
●S5 (OFF) - The system is in a shutdown state.
10 Views of Latitude 3445 Chromebook

Set up your Latitude 3445 Chromebook
About this task
NOTE: The images in this document may differ from your computer depending on the configuration you ordered.
Steps
1. Connect the power adapter and press the power button.
NOTE: To conserve battery power, the battery might enter power saving mode. Connect the power adapter and press
the power button to turn on the computer.
2. Finish Chromebook operating system setup.
Follow the on-screen instructions to complete the setup. For more information about installing and configuring Chromebook,
go to Chrome OS Support.
3. Locate and install the required apps from the Google Chrome Web Store. For more information on downloading and installing
apps on your Chromebook, search in the Knowledge Base Resource at www.dell.com/support.
2
Set up your Latitude 3445 Chromebook 11

Specifications of Latitude 3445 Chromebook
Dimensions and weight
The following table lists the height, width, depth, and weight of your Latitude 3445 Chromebook.
Table 2. Dimensions and weight
Description Values
Height:
Front height 18.62 mm (0.74 in.)
Rear height 20.20 mm (0.80 in.)
Width 323.67 mm (12.74 in.)
Depth 220.26 mm (8.68 in.)
Weight
NOTE: The weight of your computer depends on the
configuration ordered and manufacturing variability.
1.53 kg (3.37 lb)
Processor
The following table lists the details of the processors supported by your Latitude 3445 Chromebook.
Table 3. Processor
Description Option one Option two Option three Option four
Processor type AMD Ryzen 5 7520C AMD Ryzen 3 7320C AMD Athlon Gold
7220C
AMD Athlon Silver 7120C
Processor wattage 15 W 15 W 15 W 15 W
Processor core count 4 4 2 2
Processor thread
count
8 8 4 2
Processor speed Up to 4.30 GHz Up to 4.10 GHz Up to 3.70 GHz Up to 3.50 GHz
Processor cache 6 MB 6 MB 5 MB 3 MB
Integrated graphics AMD Radeon 610M
Graphics
AMD Radeon 610M
Graphics
AMD Radeon 610M
Graphics
AMD Radeon 610M
Graphics
3
12 Specifications of Latitude 3445 Chromebook

Chipset
The following table lists the details of the chipset supported by your Latitude 3445 Chromebook.
Table 4. Chipset
Description Values
Chipset AMD Mendocino 15 W
Processor ●AMD Ryzen 5 7520C
●AMD Ryzen 3 7320C
●AMD Athlon Gold 7220C
●AMD Athlon Silver 7120C
DRAM bus width 64-bit
Flash EPROM 16 MB
PCIe bus Up to Gen 4
Operating system
Your Latitude 3445 Chromebook supports the following operating systems:
●ChromeOS R112 and above
Memory
The following table lists the memory specifications of your Latitude 3445 Chromebook.
Table 5. Memory specifications
Description Values
Memory slots Integrated on system board
NOTE: Memory cannot be upgraded as it is integrated on
the system board.
Memory type ●Dual-channel LPDDR5
●Dual-channel LPDDR5x
Memory speed 5200 MT/s
Maximum memory configuration 16 GB
Minimum memory configuration 4 GB
Memory configurations supported ●4 GB LPDDR5 at 5200 MT/s
●8 GB LPDDR5 at 5200 MT/s
●16 GB LPDDR5 at 5200 MT/s
●4 GB LPDDR5x at 5200 MT/s
●8 GB LPDDR5x at 5200 MT/s
●16 GB LPDDR5x at 5200 MT/s
Specifications of Latitude 3445 Chromebook 13

External ports
The following table lists the external ports on your Latitude 3445 Chromebook.
Table 6. External ports
Description Values
USB ports ●Two USB 3.2 Gen 1 (Type-C) ports with (Power Delivery
and DisplayPort Alt Mode
NOTE: You can connect a Dell Docking Station to this
port. For more information, search in the Knowledge
Base Resource at www.dell.com/support.
●One USB 3.2 Gen 1 port with PowerShare
Audio port One Universal audio jack
Video port/ports One HDMI 2.0 port
Media-card reader One microSD-card slot
Power-adapter port Supported through USB-C
Security-cable slot One security-cable slot (wedge-shaped)
Internal slots
The following table lists the internal slots of your Latitude 3445 Chromebook.
Table 7. Internal slots
Description Values
M.2 ●One M.2 2230 slot for WiFi and Bluetooth combo card
●One M.2 2230 slot for solid-state drive
NOTE: M.2 2230 slot for SSD is not available
for models shipped with Intel Pentium and eMMC
configuration.
NOTE: To learn more about the features of different
types of M.2 cards, search in the Knowledge Base
Resource at www.dell.com/support.
Wireless module
The following table lists the Wireless Local Area Network (WLAN) module that is supported on your Latitude 3445 Chromebook.
Table 8. Wireless module specifications
Description Values
Model number MediaTek MT7921
Transfer rate Up to 1200 Mbps
Frequency bands supported 2.4 GHz/5 GHz
Wireless standards ●Wi-Fi 802.11a/b/g
14 Specifications of Latitude 3445 Chromebook

Table 8. Wireless module specifications(continued)
Description Values
●Wi-Fi 4 (WiFi 802.11n)
●Wi-Fi 5 (WiFi 802.11ac)
●Wi-Fi 6 (WiFi 802.11ax)
Encryption ●64-bit/128-bit WEP
●AES-CCMP
●TKIP
Bluetooth wireless card Bluetooth 5.3
NOTE: The version of the Bluetooth wireless card may
vary depending on the operating system that is installed
on your computer.
Audio
The following table lists the audio specifications of your Latitude 3445 Chromebook.
Table 9. Audio specifications
Description Values
Audio controller ALC5682I
Stereo conversion Not supported
Internal audio interface High definition audio interface
External audio interface Universal headset jack
Number of speakers 2
Internal-speaker amplifier Supported
External volume controls Keyboard shortcut controls
Speaker output:
Average speaker output 2 W
Peak speaker output 2 W
Subwoofer output Not supported
Microphone Digital-array microphones in camera assembly
Storage
This section lists the storage options on your Latitude 3445 Chromebook.
Your Latitude 3445 Chromebook supports one of the following storage configurations:
●M.2 2230 solid-state drive
●eMMC onboard
Specifications of Latitude 3445 Chromebook 15

Table 10. Storage specifications
Storage type Interface type Capacity
M.2 2230 solid-state drive PCIe NVMe Gen3 x2 256 GB
eMMC onboard eMMC 5.1 Up to 128 GB
Media-card reader
The following table lists the media cards supported by your Latitude 3445 Chromebook.
Table 11. Media-card reader specifications
Description Values
Media-card type microSD-card slot
Media-cards supported ●Micro Secure Digital (mSD)
●Micro Secure Digital High Capacity (mSDHC)
●Micro Secure Digital Extended Capacity (mSDXC)
NOTE: The maximum capacity supported by the media-card reader varies depending on the standard of the media card
installed in your computer.
Keyboard
The following table lists the keyboard specifications of your Latitude 3445 Chromebook.
Table 12. Keyboard specifications
Description Values
Keyboard type ●Standard backlit keyboard
●Standard non-backlit keyboard
Keyboard layout QWERTY
Number of keys Non-backlit keyboard:
●English International and English US: 74 keys
●English UK and Canada Bilingual (MUI): 75 keys
Backlit keyboard:
●English International, English US, Korean, and Thai: 74 keys
●English UK, Canada Bilingual (MUI), Belgium-Azerty,
French European, German, Italian, Nordic (MUI), Spanish
(Castillian), and Spanish (Latin America): 75 keys
●Japanese: 78 keys
Keyboard size X=19 mm key pitch
Y=19 mm key pitch
Keyboard shortcuts The Chrome device keyboard is designed to help you get to
the things you need the most.
16 Specifications of Latitude 3445 Chromebook

Keyboard special keys
The Chrome device keyboard is designed to help you get to the things you need the most. The following table is an overview of
the special keys on the top row of the keyboard.
Table 13. Keyboard special keys
Special keys
Close the pop-up window or dialog box
Go to the previous page in browser history
Reload current page
View the full screen
Enter Overview mode to show all windows
Take screenshot
Decrease screen brightness
Increase screen brightness
Mute the speaker
Decrease the speaker volume
Increase the speaker volume
Turn on your Chromebook
Camera
The following table lists the camera specifications of your Latitude 3445 Chromebook.
Table 14. Camera specifications
Description Values
Number of cameras One
Specifications of Latitude 3445 Chromebook 17

Table 14. Camera specifications(continued)
Description Values
Camera type ●HD RGB camera
●FHD RGB camera
Camera location Front camera
Camera sensor type CMOS sensor technology
Camera resolution:
Still image ●HD RGB camera: 0.92 megapixels
●FHD RGB camera: 2.07 megapixels
Video ●HD RGB camera: 1280 x 720 at 30 fps
●FHD RGB camera: 1920 x 1080 at 30 fps
Diagonal viewing angle: ●HD RGB camera: 78.60 degrees
●FHD RGB camera: 82 degrees
Touchpad
The following table lists the touchpad specifications of your Latitude 3445 Chromebook.
Table 15. Touchpad specifications
Description Values
Touchpad resolution: >300 DPI
Touchpad dimensions:
Horizontal 115 mm (4.53 in.)
Vertical 70 mm (2.76 in.)
Touchpad gestures For more information about touchpad gestures available on
Chromebook, see support.google.com/chromebook.
Power adapter
The following table lists the power adapter specifications of your Latitude 3445 Chromebook.
Table 16. Power adapter specifications
Description Values
Type 65 W adapter USB-C
Power-adapter dimensions:
Height 28 mm (1.10 in.)
Width 51 mm (2.01 in.)
Depth 112 mm (4.41 in.)
Input voltage 100 VAC to 240 VAC
18 Specifications of Latitude 3445 Chromebook

Table 16. Power adapter specifications(continued)
Description Values
Input frequency 50 Hz to 60 Hz
Input current (maximum) 1.70 A
Output current (continuous) ●20 V/3.25 A (continuous)
●15 V/3 A (continuous)
●9 V/3 A (continuous)
●5 V/3 A (continuous)
Rated output voltage ●20 VDC
●15 VDC
●9 VDC
●5 VDC
Temperature range:
Operating 0°C to 40°C (32°F to 104°F)
Storage -40°C to 70°C (-40°F to 158°F)
CAUTION: Operating and storage temperature ranges may differ among components, so operating or storing
the device outside these ranges may impact the performance of specific components.
Battery
The following table lists the battery specifications of your Latitude 3445 Chromebook.
Table 17. Battery specifications
Description Values
Battery type 54 Wh 4-cell polymer battery
Battery voltage 15 VDC
Battery weight (maximum) 0.24 kg (0.52 lb)
Battery dimensions:
Height 5.75 mm (0.23 in.)
Width 271.90 mm (10.70 in.)
Depth 82 mm (3.23 in.)
Temperature range:
Operating 0°C to 60°C (32°F to 140°F)
Storage -20°C to 60°C (-4°F to 140°F)
Battery operating time Varies depending on operating conditions and can significantly
reduce under certain power-intensive conditions.
Battery charging time (approximate) ●0°C to 15°C—4 hours (when the computer is off)
●16°C to 45°C—2 hours (when the computer is off)
●46°C to 50°C—3 hours(when the computer is off)
Specifications of Latitude 3445 Chromebook 19

Table 17. Battery specifications(continued)
Description Values
Coin-cell battery Not applicable
CAUTION: Operating and storage temperature ranges may differ among components, so operating or storing
the device outside these ranges may impact the performance of specific components.
CAUTION: Dell recommends that you charge the battery regularly for optimal power consumption. If your
battery charge is completely depleted, connect the power adapter, turn on your computer, and then restart
your computer to reduce the power consumption.
Display
The following table lists the display specifications of your Latitude 3445 Chromebook.
Table 18. Display specifications
Description Option one Option two Option three
Display type 14‐inch, High Definition (HD+) 14‐inch, Full High Definition
(FHD+)
14‐inch, Full High Definition
(FHD+)
Touch options Yes Yes No
Display-panel technology Twisted Nematic In-Plane Switching (IPS) Wide Viewing Angle (WVA)
Display-panel dimensions
(active area):
Height 309.39 mm 309.37 mm 3097 mm
Width 173.95 mm 174.02 mm 174.02 mm
Diagonal 354.95 mm 354.95 mm 354.95 mm
Display-panel native
resolution
1366 x 768 1920 x 1200 1920 x 1200
Luminance (typical) 220 nits 220 nits 250 nits
Megapixels 1.049 2.304 2.304
Color gamut 45% (NTSC) 45% (NTSC) 72% (NTSC)
Pixels Per Inch (PPI) 112 157 157
Contrast ratio (typical) 400:1 700:1 700:1
Response time (max) 35 ms 35 ms 35 ms
Refresh rate 60 Hz 60 Hz 60 Hz
Horizontal view angle +/- 85 degrees +/- 85 degrees +/- 85 degrees
Vertical view angle +/- 85 degrees +/- 85 degrees +/- 85 degrees
Pixel pitch 0.2331 x 0.2331 mm 0.161 x 0.161 mm 0.161 x 0.161 mm
Power consumption
(maximum)
108.78 W 3.10 W 4.30 W
20 Specifications of Latitude 3445 Chromebook