DFI CS551 User manual

Embedded SBC 3.5” Industrial Motherboard
User’s Manual
A-590-M-2014
CS551
ver.A_MP_3-1521_13-13

2User's Manual | CS551
Copyright
This publication contains information that is protected by copyright. No part of it may be repro-
duced in any form or by any means or used to make any transformation/adaptation without the
prior written permission from the copyright holders.
This publication is provided for informational purposes only. The manufacturer makes no
representations or warranties with respect to the contents or use of this manual and specifi-
cally disclaims any express or implied warranties of merchantability or fitness for any particular
purpose. The user will assume the entire risk of the use or the results of the use of this docu-
ment. Further, the manufacturer reserves the right to revise this publication and make changes
to its contents at any time, without obligation to notify any person or entity of such revisions or
changes.
Changes after the publication’s first release will be based on the product’s revision. The website
will always provide the most updated information.
© 2020. All Rights Reserved.
Trademarks
Product names or trademarks appearing in this manual are for identification purpose only and
are the properties of the respective owners.
FCC and DOC Statement on Class B
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reason-
able protection against harmful interference when the equipment is operated in a residential
installation. This equipment generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause harmful interference
to radio communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the user is encour-
aged to try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the receiver.
• Connect the equipment into an outlet on a circuit different from that to which the re-
ceiver is connected.
• Consult the dealer or an experienced radio TV technician for help.
Notice:
1. The changes or modifications not expressly approved by the party responsible for com-
pliance could void the user’s authority to operate the equipment.
2. Shielded interface cables must be used in order to comply with the emission limits.

3User's Manual | CS551
Table of Contents
Chapter 1 - Introduction................................................................................................................6
Specifications ......................................................................................................................... 6
Features .................................................................................................................................. 7
DDR4................................................................................................................................. 7
Chapter 2 - Hardware Installation................................................................................................8
Board Layout........................................................................................................................... 8
Standby Power LED................................................................................................................8
System Memory .....................................................................................................................9
Installing the SO-DIMM Module ..................................................................................... 9
CPU........................................................................................................................................11
Installing the CPU..........................................................................................................11
Heater(Optional) ............................................................................................................13
Installing the Heatsink or Fan.......................................................................................14
Jumper Settings ...................................................................................................................16
Front Panel (JP5)...........................................................................................................16
Clear CMOS (JP2) .........................................................................................................16
Panel Power Select (JP3) .............................................................................................17
Backlight Power Select (JP1).......................................................................................17
Rear I/O Ports.......................................................................................................................18
Graphics Display............................................................................................................18
USB Ports .......................................................................................................................19
RJ45 LAN Ports .............................................................................................................19
Internal I/O Connectors .......................................................................................................20
12V DC-In .......................................................................................................................20
COM (Serial) Port ..........................................................................................................20
Front Audio.....................................................................................................................21
USB Ports .......................................................................................................................21
LPC .................................................................................................................................22
SATA (Serial ATA) ..........................................................................................................22
Battery ............................................................................................................................23
CPU Fan..........................................................................................................................23
Digital I/O .......................................................................................................................24
SMBus ............................................................................................................................24
LVDS Panel.....................................................................................................................25
Heater.............................................................................................................................26
Expansion Slots .............................................................................................................26
Installing the M.2 Module .............................................................................................27
Installing the Mini PCIe Module ...................................................................................28
Chapter 3 - BIOS Settings...........................................................................................................30
Overview ...............................................................................................................................30
Main.......................................................................................................................................31
Advanced .............................................................................................................................31
RC ACPI Configuration..................................................................................................32
CPU Configuration.........................................................................................................32
Power & Performance ...................................................................................................33
PCH-FW Configuration ..................................................................................................33
Trusted Computing........................................................................................................34
PTN3460 Configuration ................................................................................................34
NCT5525D Super IO Configuration ..............................................................................35
NCT5525D HW Monitor ................................................................................................36
Serial Port Console Redirection ...................................................................................37
USB Configuration .........................................................................................................38
Network Stack Configuration........................................................................................39
CSM Configuration ........................................................................................................39
Chipset ..................................................................................................................................40
Graphics Configuration .................................................................................................40
PCH-IO Configuration....................................................................................................41
PCI Express Configuration............................................................................................41
SATA And RST Configuration .......................................................................................42
HD Audio Configuration ................................................................................................43
Security .................................................................................................................................44
Secure Boot....................................................................................................................44
Boot .......................................................................................................................................46
Save & Exit ............................................................................................................................46
Updating the BIOS................................................................................................................47
Notice: BIOS SPI ROM..........................................................................................................47

4User's Manual | CS551
About this Manual
This manual can be downloaded from the website. The manual is subject to change and up-
date without notice, and may be based on editions that do not resemble your actual products.
Please visit our website or contact our sales representatives for the latest editions.
Warranty
1. Warranty does not cover damages or failures that arised from misuse of the product,
inability to use the product, unauthorized replacement or alteration of components and
product specifications.
2. The warranty is void if the product has been subjected to physical abuse, improper in-
stallation, modification, accidents or unauthorized repair of the product.
3. Unless otherwise instructed in this user’s manual, the user may not, under any circum-
stances, attempt to perform service, adjustments or repairs on the product, whether in
or out of warranty. It must be returned to the purchase point, factory or authorized ser-
vice agency for all such work.
4. We will not be liable for any indirect, special, incidental or consequencial damages to
the product that has been modified or altered.
Static Electricity Precautions
It is quite easy to inadvertently damage your PC, system board, components or devices even
before installing them in your system unit. Static electrical discharge can damage computer
components without causing any signs of physical damage. You must take extra care in han-
dling them to ensure against electrostatic build-up.
1. To prevent electrostatic build-up, leave the system board in its anti-static bag until you
are ready to install it.
2. Wear an antistatic wrist strap.
3. Do all preparation work on a static-free surface.
4. Hold the device only by its edges. Be careful not to touch any of the components, con-
tacts or connections.
5. Avoid touching the pins or contacts on all modules and connectors. Hold modules or
connectors by their ends.
Safety Measures
• To avoid damage to the system, use the correct AC input voltage range.
• To reduce the risk of electric shock, unplug the power cord before removing the sys-
tem chassis cover for installation or servicing. After installation or servicing, cover the
system chassis before plugging the power cord.
Important:
Electrostatic discharge (ESD) can damage your processor, disk drive and other
components. Perform the upgrade instruction procedures described at an ESD
workstation only. If such a station is not available, you can provide some ESD pro-
tection by wearing an antistatic wrist strap and attaching it to a metal part of the
system chassis. If a wrist strap is unavailable, establish and maintain contact with
the system chassis throughout any procedures requiring ESD protection.

5User's Manual | CS551
About the Package
The package contains the following items. If any of these items are missing or damaged,
please contact your dealer or sales representative for assistance.
• 1 CS551 board
• 1 COM port cable (Length: 250mm, 1 x COM port) 332-753040-000G
• 1 Serial ATA data cable (Length: 500mm) 332-553001-005G
• 1 Serial ATA power cable (Length: 250mm) A81-004041-016G
• 1 Heat sink (Height: 43.2mm) A71-001302-030G
The board and accessories in the package may not come similar to the information listed
above. This may differ in accordance with the sales region or models in which it was sold. For
more information about the standard package in your region, please contact your dealer or
sales representative.
Optional Items
Item Name Part Number Description
USB port cable A81-001032-016G Length: 200mm
Power adapter 671-110006-100G
671-106012-000G
100W, 12V, TDP 35W
60W, 12V, DC Jack, TDP
15W
4 pin to DC jack cable A81-004051-016G Length: 100mm
Audio cable A81-022007-016G Length: 160mm
Cooler fan A71-101303-010G Height: 34.6mm
Heater 612-KP4040-000G
The board and accessories in the package may not come similar to the information listed
above. This may differ in accordance with the sales region or models in which it was sold. For
more information about the standard package in your region, please contact your dealer or
sales representative.
Before Using the System Board
When installing the system board in a new system, you will need at least the following internal
components.
• CPU
• Memory module
• Storage device such as hard disk drive .
• Power adaptor
External system peripherals may also be required for navigation and display, including at least
a keyboard, a mouse and a video display monitor.

6
Chapter 1
INTRODUCTION
User's Manual | CS551
Chapter 1 - Introduction
XSpecifications
The specifications listed here may be based on editions that do not resemble your
actual products. Please visit the download page at go.dfi.com/CS551, or via the
QR code to the right for the latest datasheet.
SYSTEM Processor 8th Gen Intel®Core™ Processors, LGA 1151 Socket
Intel®Core i7-8700T Processor (6C/12T; Max speed 4.0 GHz; TDP 35W)
Intel®Core i5-8500T Processor (6C/6T; Max speed 3.5GHz; TDP 35W)
Intel®Core i3-8100T Processor (4C/4T; Max speed 3.1GHz; TDP 35W)
Intel®Pentium G5400T Processor (2C/4T; Max speed 3.1GHz; TDP 35W)
Intel®Pentium G4900T Processor (2C/2T; Max speed 2.9GHz; TDP 35W)
9th Gen Intel®Core™ Processors, LGA 1151 Socket
Intel®Core i7-9700TE Processor (8C/8T; Max speed 3.6GHz; TDP 35W)
Intel®Core i5-9500TE Processor (6C/6T; Max speed 3.6GHz; TDP 35W)
Intel®Core i3-9100TE Processor (4C/4T; Max speed 3.2GHz; TDP 35W)
Note:
Parts of the CPUs with the limit of 82/88C operating temprature will have cpu-throttling while operate over
65C, it's strongly advised to choose i7/i5 CPU which limited at 100C due to the original design of CS551.
Above conditions won't be applied with re-designed thermal module.
Memory One 260-pin SODIMM up to 32GB
Single Channel DDR4 2666MHz
ECC only for C246 with Intel®Core i3-8100T/9100TE/Pentium G5400T/
Pentium G4900T
BIOS AMI SPI 128Mbit
GRAPHICS Controller Intel®UHD 630 Graphics GT Series
Feature OpenGL 4.6, DirectX 12, OpenCL 2.1
HW Decode: AVC/H.264, MPEG2 (H.262), VC1, JPEG/MJPEG, HEVC/H.265,
VP8, VP9, VP10
HW Encode: AVC/H.264, MPEG2 (H.262), JPEG/MJPEG, HEVC/H.265, VP8,
VP9
Display 1 x LVDS, resolution up to 1920x1200 @ 60Hz
2 x DP++, resolution up to 4096x2304 @ 60Hz
Triple
Displays
LVDS + DP++ + DP++
EXPANSION Interface 1 x Full-size Mini PCIe (PCIe/USB 2.0, optional USB 3.1 Gen1/USB 2.0)
1 x M.2 2280 M key (C246/Q370: NVMe PCIe x4/SATA 3.0 or H310: NVMe
PCIe x2, SATA 3.0)
1 x Nano SIM slot (optional for 3G/4G module)
AUDIO Audio Codec Realtek ALC262
ETHERNET Controller Intel®I211AT PCIe (10/100/1000Mbps) or Intel®I210IT PCIe
(10/100/1000Mbps)
REAR I/O Ethernet 2 x GbE (RJ-45)
USB 4 x USB 3.1 Gen2 (C246/Q370) or Gen1 (H310)
Display 2 x DP++
INTERNAL I/O Serial 1 x RS-232/422/485 (2.0mm pitch)
USB 2 x USB 2.0 (2.0mm pitch)
Display 1 x LVDS LCD Panel Connector
1 x LVDS Backlight
Audio 1 x Audio (Line-out/Mic-in)
SATA 1 x SATA 3.0 (up to 6Gb/s)
1 x SATA Power
DIO 1 x 8-bit DIO
Heater 1 x heater 12V header, activated below -10°C
SMBus 1 x SMBus
WATCHDOG
TIMER
Output &
Interval
System Reset, Programmable via Software from 1 to 255 Seconds
SECURITY TPM fTPM 2.0
POWER Type 12VDC
Consumption Typical: i7-8700T: 12V @ 0.86A (10.32Watt)
Max: i7-8700T: 12V @ 5.38A (64.56Watt)
Connector Vertical Type Connector (4-pin) (default)
Coaxial Jack (available upon request)
RTC Battery CR2032 Coin Cell
OS SUPPORT Microsoft Windows 10 IoT Enterprise 64-bit RS5
Linux Linux
ENVIRONMENT MTBF (Model: CS551-H310-BCA) 740,203 hrs @ 25°C; 462,070 hrs @ 45°C;
305,215 hrs @ 60°C; 227,949 hrs @ 70°C
(Model: CS551-H310-ECA) 742,388 hrs @ 25°C; 464,078 hrs @ 45°C;
3067,73 hrs @ 60°C; 229,188 hrs @ 70°C
Calculation Model: Telcordia Issue 4
Environment: GB, GC - Ground Benign, Controlled
Temperature Operating:
-5 to 65°C for 35W/100C CPU (fanless) and 35W 100C, 82C CPU (fan)
-30 to 80°C for 15W TDP down/100C CPU (fanless); 35W/100C CPU (fan)
Note: For -30°C environments, a heater/polyfilm can be added to heat up.
Storage: -40 to 85°C
Humidity Operating: 5 to 90% RH; Storage: 5 to 90% RH
MECHANICAL Dimensions 3.5" SBC Form Factor: 146mm (5.75") x 102mm (4.02")
Height PCB: 1.6mm, Top Side: 25.27mm, Bottom Side: 7.68 mm
CERTIFICATIONS CE, FCC, RoHS

7
Chapter 1
INTRODUCTION
User's Manual | CS551
XFeatures
Watchdog Timer
The Watchdog Timer function allows your application to regularly “clear” the system at the set
time interval. If the system hangs or fails to function, it will reset at the set time interval so that
your system will continue to operate.
DDR4
DDR4 delivers increased system bandwidth and improves performance. The advantages of
DDR4 provide an extended battery life and improve the performance at a lower power than
DDR3/DDR2.
Graphics
The integrated Intel®UHD graphics engine delivers an excellent blend of graphics performance
and features to meet business needs. It provides excellent video and 3D graphics with out-
standing graphics responsiveness. These enhancements deliver the performance and compat-
ibility needed for today’s and tomorrow’s business applications.
Serial ATA
Serial ATA is a storage interface that is compliant with SATA 1.0a specification. With speed of
up to 6Gb/s (SATA 3.0), it improves hard drive performance faster than the standard parallel
ATA whose data transfer rate is 100MB/s.
Gigabit LAN
The Intel®I219LM and Intel®I211AT Gigabit Ethernet Controllers support data transmission at
1Gbps.
Audio
The Realtek ALC887 audio codec provides 7.1 channel High Definition audio output.
Wake-On-LAN
This feature allows the network to remotely wake up a Soft Power Down (Soft-Off) PC. It is
supported via the onboard LAN port or via a PCI LAN card that uses the PCI PME (Power Man-
agement Event) signal. However, if your system is in the Suspend mode, you can power-on the
system only through an IRQ or DMA interrupt.
Wake-On-USB
This function allows you to use a USB keyboard or USB mouse to wake up a system from the
S3 (STR - Suspend To RAM) state.
ACPI STR
The system board is designed to meet the ACPI (Advanced Configuration and Power Interface)
specification. ACPI has energy saving features that enables PCs to implement Power Manage-
ment and Plug-and-Play with operating systems that support OS Direct Power Management.
ACPI when enabled in the Power Management Setup will allow you to use the Suspend to RAM
function.
With the Suspend to RAM function enabled, you can power-off the system at once by pressing
the power button or selecting “Standby” when you shut down Windows®without having to go
through the sometimes tiresome process of closing files, applications and operating system.
This is because the system is capable of storing all programs and data files during the entire
operating session into RAM (Random Access Memory) when it powers-off. The operating ses-
sion will resume exactly where you left off the next time you power-on the system.
Power Failure Recovery
When power returns after an AC power failure, you may choose to either power-on the system
manually or let the system power-on automatically.
USB
The system board supports the new USB 3.1 Gen 2. It is capable of running at a maximum
transmission speed of up to 10 Gbit/s (1.2 GB/s) and is faster than USB 3.1 Gen 1 (5 Gbit/s, or
625 MB/s), USB 2.0 (480 Mbit/s, or 60 MB/s) and USB 1.1 (12Mb/s). USB 3.1 reduces the time
required for data transmission, reduces power consumption, and is backward compatible with
USB 2.0. It is a marked improvement in device transfer speeds between your computer and a
wide range of simultaneously accessible external Plug and Play peripherals.
RTC Timer
The Real Time Clock (RTC) installed on the system board allows your system to automatically
power-on on the set date and time.

8
Chapter 2
HARDWARE INSTALLATION
User's Manual | CS551
Chapter 2 - Hardware Installation
Important:
Electrostatic discharge (ESD) can damage your board, processor, disk drives,
add-in boards, and other components. Perform installation procedures at an ESD
workstation only. If such a station is not available, you can provide some ESD
protection by wearing an antistatic wrist strap and attaching it to a metal part of
the system chassis. If a wrist strap is unavailable, establish and maintain contact
with the system chassis throughout any procedures requiring ESD protection.
Note:
Specifications of these components are model-specific. Please refer to the specifi-
cations for detail.
Important:
When the Standby Power LED lights up, it indicates that there is power on the
system board. Power-off the PC then unplug the power cord prior to installing
any devices. Failure to do so will cause severe damage to the motherboard and
components.
XStandby Power LED
Standby Power LED
XBoard Layout
Mini PCIe
M.2
M Key
Front
Audio
1
56
12
2
910
JP3
56
12
JP5
JP1
Buzzer
1
1
1
1
1
1
15
2
SATA 3.0
LVDS
Backlight
Power
SATA
Power
LVDS
Heater and Switch
LED1
LAN1 LAN2 DP++1/2
USB 3/4 (left), 1/2 (right)
(USB 3.1
Note
)
COM1
DIO
CPU Fan
USB 5/6 (USB 2.0)
1
2
2
1
1
1
1
2
910
10
9
2
1
10
9
39
40
SPI Flash BIOS
DDR4_1 SODIMM
SMBus
Battery
JP2
1
LPC
Nano SIM
1
2
13
14
Socket LGA1151
Intel
C246/Q370/H310

9
Chapter 2
HARDWARE INSTALLATION
User's Manual | CS551
• 260-pin SO-DIMM up to 32GB
• Single Channel DDR4 2666MHz
• ECC/Non-ECC, ECC only for C246 with Intel® Core i3-8100T/9100TE/
Pentium G5400T/Pentium G4900T
XSystem Memory
Features
The system board supports one single channel DDR4 SO-DIMM memory module.
Single Channel (SC)
Data will be accessed in chunks of 64 bits from the memory channels.
DDR4_1
Installing the SO-DIMM Module
Before installing the memory module, please make sure that the following safety cautions are
well-attended.
1. Make sure the PC and all other peripheral devices connected to it has been powered
down.
2. Disconnect all power cords and cables.
3. Locate the SO-DIMM socket on the system board
4. Make sure the notch on memory card is aligned to the key on the socket.
XSystem Memory
Notch
Retention Notch
Key
Socket Top View
DDR4 SO-DIMM
Retention Clip
45°
Step 1
Step 2
Step 3

10
Chapter 2
HARDWARE INSTALLATION
User's Manual | CS551
XSystem Memory
XInstalling the SO-DIMM Module
Please follow the steps below to install the memory card into the socket.
Step 1:
Insert the memory card into the
slot while making sure 1) the
notch and the key are aligned,
and 2) the non-connector end
rises approximately 45 degrees
horizontally. Press the card firmly
into the socket while applying and
maintaining even pressure on both
ends.
Step 2:
Press the end of the card far from
the socket down while making
sure the retention notch and the
clip align as indicated by the dot-
ted line in the illustration. If the
retention notch and the clip do not
align, please remove the card and
re-insert it. Press the card all the
way down.
Step 3:
The clips snap automatically and
abruptly to the retention notches
of the card sounding a distinctive
click, and lock the card in place.
Inspect that the clip sits in the
notch. If not, please pull the clips
outward, release and remove the
card, and mount it again.
Notch
Retention Notch
Key
Socket Top View
DDR3 SO-DIMM
Retention Clip
45°
Step 1
Step 2
Step 3