GIGA-BYTE TECHNOLOGY GA-SBCAP3940 User manual

GA-SBCAP3940
User's Manual
Rev. 1001
To reduce the impacts on global warming, the packaging materials of this product
are recyclable and reusable. GIGABYTE works with you to protect the environment.
For more product details, please visit GIGABYTE's website.

Copyright
©2018 GIGA-BYTE TECHNOLOGY CO., LTD. All rights reserved.
The trademarks mentioned in this manual are legally registered to their respective owners.
Disclaimer
Information in this manual is protected by copyright laws and is the property of GIGABYTE.
Changes to the specications and features in this manual may be made by GIGABYTE without prior notice.
No part of this manual may be reproduced, copied, translated, transmitted, or published in any form or
by any means without GIGABYTE's prior written permission.
In order to assist in the use of this product, carefully read the User's Manual.
For product-related information, check on our website at: https://www.gigabyte.com
Identifying Your Motherboard Revision
The revision number on your motherboard looks like this: "REV: X.X." For example, "REV: 1.0" means
the revision of the motherboard is 1.0. Check your motherboard revision before updating motherboard
BIOS, drivers, or when looking for technical information.
Example:
Oct. 12, 2018
Motherboard
GA-SBCAP3940
Oct. 12, 2018
Motherboard
GA-SBCAP3940

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Table of Contents
GA-SBCAP3940 Motherboard Layout.............................................................................4
Chapter 1 Hardware Installation .....................................................................................5
1-1 Installation Precautions.................................................................................... 5
1-2 ProductSpecications...................................................................................... 6
1-3 Installing the Memory....................................................................................... 8
1-4 Installing an Expansion Card ........................................................................... 8
1-5 Back Panel Connectors.................................................................................... 8
1-6 Internal Connectors........................................................................................ 10
Chapter 2 BIOS Setup ..................................................................................................21
2-1 Startup Screen ............................................................................................... 21
2-2 Main ............................................................................................................... 22
2-3 Advanced ....................................................................................................... 23
2-4 Security .......................................................................................................... 28
2-5 Boot................................................................................................................ 30
2-6 Save & Exit..................................................................................................... 32
Chapter 3 Appendix ......................................................................................................33
Drivers Installation..................................................................................................... 33
Regulatory Statements.............................................................................................. 34
Contact Us ................................................................................................................ 36

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GA-SBCAP3940 Motherboard Layout
* The box contents above are for reference only and the actual items shall depend on the product package you obtain.
The box contents are subject to change without notice.
Box Contents
5GA-SBCAP3940 motherboard 5Two SATA cables
5Motherboard driver disk 5One SATA power cable
5User's Manual 5One heat spreader
5One COM port cable 5One DC power cable
5One LPT port cable
(Note) The processor/chip is on the back of the motherboard.
HDMI
LVDS
B_BIOS (Note)
SYS_FAN
COMA COMC
SATA3 01
FPD
F_PANEL
GPIO_PWRSEL
CODEC
SPEAKER
CI
iTE®
Super I/O (Note)
F_USB1
F_USB2
2W_SPKR
CLR_CMOS
BL_SW
COMDCOMB
LAN1
SATA_PWR1
R_USB30
COMA_PW COMB_PW COMC_PW COMD_PW
SODIMM_1
VGA
Intel®Atom®x5-E3940 (Note)
LAN2
HP_MIC
MPCIE1
MSATA_MPCIE2
HS_2BHS_2A
HS_1BHS_1A
Realtek®GbE LAN
M_BIOS (Note)
LPT_SEL
U_SIM
GPIO_SET
LCD_VCC
MON_SW
SPEAKER_CONTROL
SMBUS
I2C
DCIN_PWR
LPT_GPIO SATA_PWR2
BIOS_SET
GA-SBCAP3940
BAT TPM_IC

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Chapter 1 Hardware Installation
1-1 Installation Precautions
The motherboard contains numerous delicate electronic circuits and components which can become
damaged as a result of electrostatic discharge (ESD). Prior to installation, carefully read the user's
manual and follow these procedures:
•Prior to installation, make sure the chassis is suitable for the motherboard.
•Prior to installation, do not remove or break motherboard S/N (Serial Number) sticker or
warranty sticker provided by your dealer. These stickers are required for warranty validation.
•Always remove the AC power by unplugging the power cord from the power outlet before
installing or removing the motherboard or other hardware components.
•When connecting hardware components to the internal connectors on the motherboard, make
sure they are connected tightly and securely.
•When handling the motherboard, avoid touching any metal leads or connectors.
•It is best to wear an electrostatic discharge (ESD) wrist strap when handling electronic
components such as a motherboard, CPU or memory. If you do not have an ESD wrist strap,
keepyourhandsdryandrsttouchametalobjecttoeliminatestaticelectricity.
•Prior to installing the motherboard, please have it on top of an antistatic pad or within an
electrostatic shielding container.
•Before connecting or unplugging the power supply cable from the motherboard, make sure
the power supply has been turned off.
•Before turning on the power, make sure the power supply voltage has been set according to
the local voltage standard.
•Before using the product, please verify that all cables and power connectors of your hardware
components are connected.
•To prevent damage to the motherboard, do not allow screws to come in contact with the
motherboard circuit or its components.
•Make sure there are no leftover screws or metal components placed on the motherboard or
within the computer casing.
•Do not place the computer system on an uneven surface.
•Do not place the computer system in a high-temperature or wet environment.
•Turning on the computer power during the installation process can lead to damage to system
components as well as physical harm to the user.
•If you are uncertain about any installation steps or have a problem related to the use of the
product,pleaseconsultacertiedcomputertechnician.
•If you use an adapter, extension power cable, or power strip, ensure to consult with its installation
and/or grounding instructions.

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1-2 ProductSpecications
CPU Built in with an Intel®Atom®x5-E3940 SoC (1.6 GHz)
* Do not disassemble the onboard SoC and the heatsinks by yourself to avoid damage
to these components.
2 MB L2 Cache
Memory 1 x DDR3L SO-DIMM socket supporting up to 8 GB of system memory
Support for DDR3L 1866/1600/1333 MHz memory module
(Go to GIGABYTE's website for the latest supported memory speeds and memory
modules.)
Onboard
Graphics
Integrated in the SoC:
- 1 x D-Sub port, supporting a maximum resolution of 1920x1200@60 Hz
- 1 x HDMI port, supporting a maximum resolution of 3840x2160@30 Hz
Maximum shared memory of 512 MB
Audio Realtek®ALC255 codec
HighDenitionAudio
2-channel
LAN 2 x Realtek®GbE LAN chips (10/100/1000 Mbit)
TPM Inneonchip,supportingTPM2.0
Expansion Slots 2 x full size Mini PCIe slots
* The MSATA_MPCIE2 slot can also be used as an MSATA connector.
(The Mini PCIe slots conform to PCI Express 2.0 standard.)
Storage Interface Integrated in the SoC:
- 2 x SATA 6Gb/s connectors
- 1 x MSATA connector (MSATA_MPCIE2)
* The MSATA_MPCIE2 shares bandwidth with the SATA3 1 connector. The SATA3 1
becomes unavailable when a device is installed in the MSATA_MPCIE2 connector.
USB Integrated in the SoC:
- 2 x USB 3.0 ports on the back panel
- 4 x USB 2.0/1.1 ports available through the internal USB headers
Internal
Connectors
1 x DC-In power connector
1 x system fan header
2 x SATA 6Gb/s connectors
2 x SATA power connectors
1 x front panel header
1 x battery cable header
2 x USB 2.0/1.1 headers
4 x serial port headers
4 x serial port power select jumpers
1 x speaker header
1 x GPIO power selection jumper
1xGPIOstatuscongurationjumper
1 x LVDS header
1 x LVDS drive voltage jumper
1xatpaneldisplayheader
1xatpaneldisplayswitchheader
1 x backlight switch header

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Internal
Connectors
1 x volume control header
1 x buzzer header
1 x LPT/GPIO header
1xLPTcongurationjumper
1 x I2C
1 x SMBUS
1 x BIOS Select jumper
1 x Clear CMOS jumper
1 x chassis intrusion header
Back Panel
Connectors
1 x HDMI port
1 x D-Sub port
2 x USB 3.0 ports
2 x RJ-45 ports
1 x audio jack (headphone and microphone combo jack)
I/O Controller iTE®I/O Controller Chip
Hardware
Monitor
Voltage detection
Temperature detection
Fan speed detection
Fan speed control
* Whether the fan speed control function is supported will depend on the cooler you
install.
BIOS 2x64Mbitash
Use of licensed AMI UEFI BIOS
Support for DualBIOS™
PnP 1.0a, DMI 2.7, WfM 2.0, SM BIOS 2.7, ACPI 5.0
Unique Features Support for Xpress Install
Support for @BIOS
Support for APP Center
* Available applications in APP Center may vary by motherboard model. Supported
functionsofeachapplicationmayalsovarydependingonmotherboardspecications
Bundled
Software Norton®Internet Security (OEM version)
Operating
System Support for Windows 10 64-bit
Form Factor SBC Form Factor; 14.6cm x 10.2cm
*GIGABYTEreservestherighttomakeanychangestotheproductspecicationsandproduct-relatedinformationwithout
prior notice.
Please visit GIGABYTE's website
for support lists of CPU, memory
modules, and SSDs.
Please visit the Support\Utility List
page on GIGABYTE's website to
download the latest version of apps.

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1-3 Installing the Memory
Read the following guidelines before you begin to install the memory:
•Make sure that the motherboard supports the memory.
(Go to GIGABYTE's website for the latest supported memory speeds and memory modules.)
•Always turn off the computer and unplug the power cord from the power outlet before installing the
memory to prevent hardware damage.
•Memory modules have a foolproof design. A memory module can be installed in only one direction.
If you are unable to insert the memory, switch the direction.
1-4 Installing an Expansion Card
Read the following guidelines before you begin to install an expansion card:
•Make sure the motherboard supports the expansion card. Carefully read the manual that came
with your expansion card.
•Always turn off the computer and unplug the power cord from the power outlet before installing an
expansion card to prevent hardware damage.
1-5 Back Panel Connectors
HDMI Port
The HDMI port is HDCP compliant and supports Dolby TrueHD and DTS HD
Master Audio formats. It also supports up to 192KHz/24bit 8-channel LPCM audio
output. You can use this port to connect your HDMI-supported monitor. The maximum supported resolution
is 3840x2160@30 Hz, but the actual resolutions supported are dependent on the monitor being used.
After installing the HDMI device, make sure to set the default sound playback device to HDMI. (The
item name may differ depending on your operating system.)
Dual-DisplayCongurationsfortheOnboardGraphics:
Dual-displaycongurationsaresupportedafteryouinstallmotherboarddriversinOS.
D-Sub Port
The D-Sub port supports a 15-pin D-Sub connector and supports a maximum resolution of 1920x1200@60 Hz
(the actual resolutions supported depend on the monitor being used). Connect a monitor that supports D-Sub
connection to this port.
USB 3.0 Port
The USB 3.0 port supports the USB 3.1 Gen 1specicationandiscompatibletotheUSB2.0specication.
Use this port for USB devices.

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HP MIC (Headphone and Microphone Combo Jack)
This jack is for connecting a headphone or microphone. You can connect a microphone, headphone or
speaker to this jack.
•Whenremovingthecableconnectedtoabackpanelconnector,rstremovethecablefromyour
device and then remove it from the motherboard.
•When removing the cable, pull it straight out from the connector. Do not rock it side to side to
prevent an electrical short inside the cable connector.
Please visit GIGABYTE's website for more software information.
Activity LED Connection/
Speed LED
LAN Port Connection/Speed LED:
State Description
Orange 1 Gbps data rate
Green 100 Mbps data rate
Off 10 Mbps data rate
Activity LED:
State Description
Blinking Data transmission or receiving is occurring
Off No data transmission or receiving is occurring
RJ-45 LAN Port
The Gigabit Ethernet LAN port provides Internet connection at up to 1 Gbps data rate. The following
describes the states of the LAN port LEDs.

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Read the following guidelines before connecting external devices:
•First make sure your devices are compliant with the connectors you wish to connect.
•Before installing the devices, be sure to turn off the devices and your computer. Unplug the power
cord from the power outlet to prevent damage to the devices.
•After installing the device and before turning on the computer, make sure the device cable has
been securely attached to the connector on the motherboard.
1-6 Internal Connectors
1) SYS_FAN
2) SATA3 0/1
3) SATA_PWR1/SATA_PWR2
4) BAT
5) F_PANEL
6) DCIN_PWR
7) F_USB1/F_USB2
8) SPEAKER_CONTROL
9) SPEAKER
10) 2W_SPKR
11) CI
12) MON_SW
13) LCD_VCC
14) GPIO_SET
15) BL_SW
16) FPD
17) GPIO_PWRSEL
18) LPT_GPIO
19) LPT_SEL
20) COMA/COMB
21) COMC/COMD
22) COMA/B/C/D_PW
23) SMBUS
24) I2C
25) LVDS
26) BIOS_SET
27) CLR_CMOS
2
3
1
9
4
5
6
7
8
10
11
12
13
14
15
16
1718 192022
23
24
25
27
3
26
21