WL551
A-598-M-2040
Preliminary
3.5" SBC Motherboard
User’s Manual
2User's Manual | WL551
Copyright
This publication contains information that is protected by copyright. No part of it may be
reproduced 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
specifically 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 document. 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 reasonable
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
encouraged 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
receiver 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
compliance 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 | WL551
Table of Contents
Chapter 1 - Introduction................................................................................................................6
Specifications ......................................................................................................................... 6
WL551...............................................................................................................................6
Features .................................................................................................................................. 7
Chapter 2 - Hardware Installation ................................................................................................8
Board Layout...........................................................................................................................8
System Memory ..................................................................................................................... 9
Installing the Memory Module ........................................................................................9
Removing the Memory Module ....................................................................................10
Installing the Heat Sink .................................................................................................11
Jumper Settings ...................................................................................................................12
Clear CMOS (JP1) .........................................................................................................12
DIO PU/PD Select (JP3) ................................................................................................ 12
DIO Power Select (JP2) ................................................................................................13
Panel Backlight Selection (DPJP604) ..........................................................................14
Panel Inverter Power Selection (DPJP602) .................................................................14
Panel Power Selection (DPJP603) ...............................................................................15
InnoAGE Remote Management (JP6) ..........................................................................15
14 InnoAGE Remote Management .............................................................................15
Switch Settings .....................................................................................................................16
DIP Switch (SW1) ..........................................................................................................16
Rear I/O Ports .......................................................................................................................17
USB Ports ....................................................................................................................... 17
Graphics Display ............................................................................................................18
LAN .................................................................................................................................18
USB Ports ....................................................................................................................... 19
Front Audio .....................................................................................................................20
Digital I/O .......................................................................................................................20
Power Connector ...........................................................................................................21
COM1 .............................................................................................................................. 21
LVDS Panel ..................................................................................................................... 22
M.2 B Key 3042/2042 ...................................................................................................23
Expansion Slots .............................................................................................................23
M.2 E Key 2230 ..............................................................................................................23
Installing the M.2 Module .............................................................................................23
Installing the Mini PCIe Module ...................................................................................24
Front Panel .....................................................................................................................26
Battery Header ............................................................................................................... 27
Heater ............................................................................................................................. 27
SMBus ............................................................................................................................28
4User's Manual | WL551
About this Manual
This manual can be downloaded from the website.
The manual is subject to change and update 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 arise 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
installation, modification, accidents or unauthorized repair of the product.
3. Unless otherwise instructed in this user’s manual, the user may not, under any
circumstances, 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 service agency for all such work.
4. We will not be liable for any indirect, special, incidental or consequential 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
handling 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,
contacts or connections.
5. Avoid touching the pins or contacts on all modules and connectors. Hold modules or
connectors by their ends.
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
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.
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
system chassis cover for installation or servicing. After installation or servicing, cover
the system chassis before plugging the power cord.
5User's Manual | WL551
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 WL551 board
• 1 SATA cable (Length: 300mm) 332-553001-205G
• 1 SATA power cable (Length: 250mm) A81-004041-016G
• 1 COM cable (Length: 250mm) 332-753040-000G
• 1 USB 2.0 cable (Length: 200mm) A81-001032-016G
• 1 Audio cable (Length: 160mm) A81-022007-016G
• 1 Front Panel cable (Length: 250mm) A81-009307-001G
• 1 Heatsink (Hight: 32mm) A71-008152-000G
• 1 DVD 643-WL5511-000G
Note: The combination is subject to change at mass production.
Note: The items are subject to change in the developing stage.
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.
• Memory module
• Storage device
• 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 | WL551
Chapter 1 - Introduction
X Specifications
WL551
SYSTEM Processor 8th Generation Intel® Core™ Processors, BGA 1528
Intel® Core™ i7-8665UE, Quad Core, 8M Cache, 1.7GHz (4.4GHz), 15W
Intel® Core™ i5-8365UE, Quad Core, 6M Cache, 1.6GHz (4.1GHz), 15W
Intel® Core™ i3-8145UE, Dual Core, 4M Cache, 2.2GHz (3.9GHz), 15W
Intel® Core™ Celeron® 4305UE, Dual Core, 2M Cache, 2.0GHz (2.0GHz),
15W
Memory One 260-pin SODIMM up to 32GB
Single Channel DDR4 up to 2400MHz
BIOS AMI SPI 128Mbit
GRAPHICS Controller Intel® UHD Graphics 620/ Intel® UHD Graphics 610 (for Celeron 4305UE)
Feature OpenGL 4.5, DirectX 12, OpenCL 2.1
HW Decode: AVC/H.264, MPEG2, VC1/WMV9, JPEG/MJPEG, HEVC/H265,
VP8, VP9
HW Encode: AVC/H.264, MPEG2, JPEG, HEVC/H265, VP8, VP9
Display 1 x DP++/HDMI
1 x LVDS or 1 x eDP (opt.)
DP: resolution up to 4096*2160@60Hz
HDMI: resolution up to 3840*2160@30Hz
LVDS: resolution up to 1920x1200 @60Hz
eDP: resolution up to 3840x2160 @ 60Hz
Dual Displays 1x COMBO port (DP++/HDMI) + 1 x LVDS
1x COMBO port (DP++/HDMI) + 1 x eDP (opt.)
EXPANSION Interface 1 x M.2 M key 2280/2242 (PCIe x4/SATA 3.0)
1 x M.2 B key 3042/2242 (USB 3.1 Gen2/USB 2.0/SATA 3.0 or PCIe x1)
Support Nano SIM slot (opt.)
1 x M.2 E key 2230 (PCIe x2/USB 2.0)
Support Innodisk InnoAGE™ SSD
AUDIO Audio Codec Realtek ALC262-VC2-GR
ETHERNET Controller 3 x Intel® I211AT PCIe (10/100/1000Mbps) or
3 x Intel® I210IT PCIe (10/100/1000Mbps)
REAR I/O Ethernet 3 x GbE (RJ-45)
USB 4 x USB 3.1 Gen 2
Display 1 x COMBO port (DP++/HDMI)
INTERNAL I/O Serial 1 x RS-232/422/485 (2.00mm pitch)
RS485 support auto flow control
USB 2 x USB 2.0 (2.00mm pitch)
Display 1 x LVDS LCD Panel connector or 1 x eDP LCD panel connector
1 x LCD/Intverter Power
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
SMBus 1 x SMBus
WATCHDOG
TIMER
Output &
Interval
System Reset, Programmable via Software from 1 to 255 sec/min
SECURITY TPM fTPM2.0 (default)
dTPM2.0 (opt.)
POWER Type Single 12V +/-10% DC
Connector 4-pin Right Angle Type Connector (default)
DC Jack (available upon request)
4-pin Vertical Type Connector (available upon request)
RTC Battery CR2032 Coin Cell
Consumption TBD
OS SUPPORT
(UEFI Only)
Windows 10 IoT Enterprise 64-bit
Linux
ENVIRONMENT Temperature Operating: -5 to 65°C, -30 to 80°C
Storage: -40 to 85°C
Humidity Operating: 5 to 90% RH
Storage: 5 to 90% RH
MTBF TBD
MECHANICAL Dimensions 3.5" SBC Form Factor
146mm (5.75") x 102mm (4.02")
Height PCB: 1.6mm
Top Side: 15mm
Bottom Side: 4mm
CERTIFICATIONS CE, FCC, RoHS
7
Chapter 1
INTRODUCTION
User's Manual | WL551
X Features
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
®
HD graphics engine delivers an excellent blend of graphics performance
and features to meet business needs. It provides excellent video and 3D graphics with
outstanding graphics responsiveness. These enhancements deliver the performance and
compatibility needed for today’s and tomorrow’s business applications.
Gigabit LAN
The Gigabit Ethernet Controllers support data transmission at 1Gbps.
Audio
The audio codec provides 5.1 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
Management 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 Management 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
session 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 | WL551
Chapter 2 - Hardware Installation
X Board Layout
Note:
Some components are optional and only available upon request.
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.
Intel
BGA 1528
1
1
1
1
1
1
1 2
9 10
1 2
9
1
1
1
5
2
2
56
1
2
9
1
6
5
2
1
2
10
1
12
56
10
1
3940
1
1
2
5
6
1
1
ON
234
Heater
12V DC-In
DDR4 SO-DIMM
CPU Fan
M.2 M Key LED
M.2 M Key
2242/2280
Battery
Clear CMOS
(JP1)
SATA Power
SATA
USB 7/8
(USB 2.0)
JP6
M.2 B Key
3042/2042
LVDS
LVDS Backlight
Panel Power
Select
Inverter Power
Select
Backlight Switch
& Voltage
Front Panel
Front Audio
Nano SIM
(Bottom Side)
M.2 E Key 2230
COM1
DIO
DIO
POWER
DIO
PU/PD
SMBus
LAN 1LAN 2LAN 3
USB 1/2USB 3/4
DP/HDMI
Heater LED
(Bottom Side)
CPU
(Bottom Side)
DIP switch
(SW1)
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HARDWARE INSTALLATION
User's Manual | WL551
X System Memory
The system board supports the following memory interface.
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 socket on the system board
4. Make sure the notch on memory card is aligned to the key on the socket.
Socket Side View
Socket Top View
Memory Module
Notch
Key
Eject TabEject Tab
Step 3
Step 2
Step 1 Step 1
Step 2
Step 3
Socket Side View
Socket Top View
Memory Module
Key
Eject TabEject Tab
Step 3
Step 2
Step 1
Step 1
Step 2
Step 3
Notch
Retention Notch
X System Memory
Installing the Memory Module
Intel
BGA 1528
1
1
1
1
1
1
1 2
9 10
1 2
9
1
1
1
5
2
2
56
1
2
9
1
6
5
2
1
2
10
1
12
56
10
1
3940
1
1
2
5
6
1
1
ON
234
DDR4_1
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Chapter 2
HARDWARE INSTALLATION
User's Manual | WL551
Please follow the steps below to install the memory card into the socket.
Step 1:
Press the eject tabs at both ends of the socket outward and downward to release them from
the locked position.
Step 2:
Insert the memory card into the slot while making sure the notch and the key are aligned.
Press the card down firmly with fingers while applying and maintaining even pressure on both
ends.
Step 3:
The tabs snap automatically to the edges of the card and lock the card in place.
Socket Side View
Socket Top View
Memory Module
Notch
Key
Eject TabEject Tab
Step 3
Step 2
Step 1
Step 1
Step 2
Step 3
Socket Side View
Socket Top View
Memory Module
Key
Eject TabEject Tab
Step 3
Step 2
Step 1
Step 1
Step 2
Step 3
Notch
Retention Notch
X System Memory X Installing the Memory Module
Socket Side View
Socket Top View
Memory Module
Notch
Key
Eject TabEject Tab
Step 3
Step 2
Step 1
Step 1
Step 2
Step 3
Socket Side View
Socket Top View
Memory Module
Key
Eject TabEject Tab
Step 3
Step 2
Step 1
Step 1
Step 2
Step 3
Notch
Retention Notch
Please follow the steps below to remove the memory card from the socket.
Step 1:
Press the eject tabs at both ends of the socket outward and downward to release them from
the locked position.
Step 2:
The memory card ejects from the slot automatically.
Step 3:
Hold the card by its edges and remove it from the slot.
X System Memory
Removing the Memory Module
11
Chapter 2
HARDWARE INSTALLATION
User's Manual | WL551
Installing the Heat Sink
The CPU must be kept cool by using a heat sink, otherwise the CPU will overheat damaging
both the CPU and system board.
1. Before you install the fan / heat sink, you must apply a thermal paste onto the top of
the CPU. The thermal paste is usually supplied when you purchase the fan / heat sink
assembly. Do not spread the paste all over the surface. When you later place the heat
sink on top of the CPU, the compound will disperse evenly.
Some heat sinks come with a patch of pre-applied thermal paste. Do not apply thermal
paste if the fan / heat sink already has a patch of thermal paste on its underside. Peel
the strip that covers the paste before you place the fan / heat sink on top of the CPU.
2. Place the heat sink on top of the CPU. The 4 spring screws around the heat sink, which
are used to secure the heat sink onto the system board, must match the 4 mounting
holes around the board.
3. Screw tight two of the spring screws at opposite corners into the mounting holes. And
then proceed with the other two spring screws.
X CPU
Mounting holes
Intel
BGA 1528
1
1
1
1
1
1
1 2
9 10
1 2
9
1
1
1
5
2
2
56
1
2
9
1
6
5
2
1
2
10
1
12
56
10
1
3940
1
1
2
5
6
1
1
ON
234
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User's Manual | WL551
X Jumper Settings
Clear CMOS (JP1)
If any anomaly of the followings is encountered —
a) CMOS data is corrupted;
b) you forgot the supervisor or user password;
c) failure to start the system due to BIOS mis-configuration
— it is suggested that the system be reconfigured with default values stored in the ROM BIOS.
To load the default values stored in the ROM BIOS, please follow the steps below.
1. Power-off the system and unplug the power cord.
2. Put a jumper cap on JP5’s pin 2 and pin 3. Wait for a few seconds and set JP5 back to
its default setting, i.e. jumper cap on pin 1 and pin 2.
3. Plug the power cord and power-on the system.
Intel
BGA 1528
1
1
1
1
1
1
1 2
9 10
1 2
9
1
1
1
5
2
2
56
1
2
9
1
6
5
2
1
2
10
1
12
56
10
1
3940
1
1
2
5
6
1
1
ON
234
DIO PU/PD Select (JP3)
X Jumper Settings
Intel
BGA 1528
1
1
1
1
1
1
1 2
9 10
1 2
9
1
1
1
5
2
2
56
1
2
9
1
6
5
2
1
2
10
1
12
56
10
1
3940
1
1
2
5
6
1
1
ON
234
1-2 On:
Normal (default)
31 2
2-3 On:
Clear CMOS
31 2
1-3 On: DIO Power (DIO4-7)
2-4 On: DIO Power (DIO0-3)
3-5 On: GND (DIO4-7)
4-6 On: GND (DIO0-3)
1
3
5
2
4
6
1
3
5
2
4
6
To switch DIO PU/PD type.
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Chapter 2
HARDWARE INSTALLATION
User's Manual | WL551
DIO Power Select (JP2)
X Jumper Settings
Intel
BGA 1528
1
1
1
1
1
1
1 2
9 10
1 2
9
1
1
1
5
2
2
56
1
2
9
1
6
5
2
1
2
10
1
12
56
10
1
3940
1
1
2
5
6
1
1
ON
234
JP2 is used to select the power of DIO (Digital I/O) signal.
2-3 On: 5V
1-2 On:
5VSB (default)
31 2 31 2
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HARDWARE INSTALLATION
User's Manual | WL551
Panel Backlight Selection (DPJP604)
X Jumper Settings
Intel
BGA 1528
1
1
1
1
1
1
1 2
9 10
1 2
9
1
1
1
5
2
2
56
1
2
9
1
6
5
2
1
2
10
1
12
56
10
1
3940
1
1
2
5
6
1
1
ON
234
DPJP604 is used to select the panel backlight power.
1-2 On:
3V3 (default)
31 2 31 2
2-3 On:
5V
Panel Inverter Power Selection (DPJP602)
X Jumper Settings
Intel
BGA 1528
1
1
1
1
1
1
1 2
9 10
1 2
9
1
1
1
5
2
2
56
1
2
9
1
6
5
2
1
2
10
1
12
56
10
1
3940
1
1
2
5
6
1
1
ON
234
DPJP602 is used to select the panel inverter power.
1-2 On:
+12V (default)
31 2 31 2
2-3 On:
5V
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User's Manual | WL551
Panel Power Selection (DPJP603)
X Jumper Settings
Intel
BGA 1528
1
1
1
1
1
1
1 2
9 10
1 2
9
1
1
1
5
2
2
56
1
2
9
1
6
5
2
1
2
10
1
12
56
10
1
3940
1
1
2
5
6
1
1
ON
234
DPJP603 is used to select the panel power.
1-2 On:
+12V (default)
3-4 On:
+5V
12
6 5
12
6 5
5-6 On:
+3.3V
12
6 5
InnoAGE Remote Management (JP6)
X Jumper Settings
Intel
BGA 1528
1
1
1
1
1
1
1 2
9 10
1 2
9
1
1
1
5
2
2
56
1
2
9
1
6
5
2
1
2
10
1
12
56
10
1
3940
1
1
2
5
6
1
1
ON
234
JP6 is used to configure the InnoAGE Remote Management.
14 InnoAGE Remote Management
Pin Assignment Pin Assignment
1 PC Reset 2 Recovery
3 Power LED 4 HDD LED
5 Power Button 6 GND
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Chapter 2
HARDWARE INSTALLATION
User's Manual | WL551
X Switch Settings
DIP Switch (SW1)
Intel
BGA 1528
1
1
1
1
1
1
1 2
9 10
1 2
9
1
1
1
5
2
2
56
1
2
9
1
6
5
2
1
2
10
1
12
56
10
1
3940
1
1
2
5
6
1
1
ON
234
SKUs M.2 E-Key M.2 B-Key M.2 M-Key SATA_5V
000G~800G SW1 1-8 ON 2-7 ON 3-6 ON 4-5 ON
+3V3SB +3V3SB +3V3SB +5VSB
900G SW2 1-8 OFF 2-7 OFF 3-6 OFF 4-5 OFF
+3.3V +3.3V +3.3V +5V
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User's Manual | WL551
X Rear I/O Ports
The rear panel I/O ports consist of the following:
• 1 HDMI / DP++ port
• 3 RJ45 LAN ports
• 4 USB 3.1 Gen4 ports
Rear
USB Ports
USB allows data exchange between your computer and a wide range of simultaneously
accessible external Plug and Play peripherals.
Wake-On-USB Keyboard/Mouse
The Wake-On-USB Keyboard/Mouse function allows you to use a USB keyboard or USB mouse
to wake up a system from the S3 (STR - Suspend To RAM) state.
X Rear I/O Ports
Intel
BGA 1528
1
1
1
1
1
1
1 2
9 10
1 2
9
1
1
1
5
2
2
56
1
2
9
1
6
5
2
1
2
10
1
12
56
10
1
3940
1
1
2
5
6
1
1
ON
234
DP++/HDMI
LAN 2
USB 3.1 Gen 1
x4
LAN 1 LAN 3
DP++/HDMI
LAN 2
USB 3.1 Gen 1
x4
LAN 1 LAN 3
18
Chapter 2
HARDWARE INSTALLATION
User's Manual | WL551
Graphics Display
DisplayPort ++
The DisplayPort (DP) is a digital display interface used to connect a display device such as a
computer monitor. It is used to transmit audio and video simultaneously. The interface, which
is developed by VESA, delivers higher performance features than any other digital interface.
DP++ is supported by the system board for converting to DVI and HDMI signals.
HDMI
The HDMI port which carries both digital audio and video signals is used to connect a LCD
monitor or digital TV that has the HDMI port.
X Rear I/O Ports
Intel
BGA 1528
1
1
1
1
1
1
1 2
9 10
1 2
9
1
1
1
5
2
2
56
1
2
9
1
6
5
2
1
2
10
1
12
56
10
1
3940
1
1
2
5
6
1
1
ON
234
DP++/HDMI
LAN 2
USB 3.1 Gen 1
x4
LAN 1 LAN 3
LAN
LAN1/LAN2/LAN3 (RJ45)
The onboard RJ45 LAN port allows the system board to connect to a local area network by
means of a network hub.
X Rear I/O Ports
Intel
BGA 1528
1
1
1
1
1
1
1 2
9 10
1 2
9
1
1
1
5
2
2
56
1
2
9
1
6
5
2
1
2
10
1
12
56
10
1
3940
1
1
2
5
6
1
1
ON
234
DP++/HDMI
LAN 2
USB 3.1 Gen 1
x4
LAN 1 LAN 3
19
Chapter 2
HARDWARE INSTALLATION
User's Manual | WL551
The USB device allows data exchange between your computer and a wide range of
simultaneously accessible external Plug and Play peripherals.
The internal USB pin headers may be connected to a card-edge bracket. Install the card-edge
bracket to an available slot at the rear of the system chassis and then insert the USB port
cables to a connector.
Wake-On-USB Keyboard/Mouse
The Wake-On-USB Keyboard/Mouse function allows you to use a USB keyboard or USB mouse
to wake up the system from the S state(s).
USB Ports
X Internal I/O Connectors
USB 7/8
(USB 2.0)
Intel
BGA 1528
1
1
1
1
1
1
1 2
9 10
1 2
9
1
1
1
5
2
2
56
1
2
9
1
6
5
2
1
2
10
1
12
56
10
1
3940
1
1
2
5
6
1
1
ON
234
Pin Assignment Pin Assignment
1 VCC 2 VCC
3 -DATA 4 -DATA
5 +DATA 6 +DATA
7 GND 8 GND
9 Key 10 N.C.
USB2.0 Pin Assignment
20
Chapter 2
HARDWARE INSTALLATION
User's Manual | WL551
X Internal I/O Connectors
Front Audio
The Front Audio internal connector allows you to connect to the second line-out and mic-in
jacks that are at the front panel of your system.
Pin Assignment Pin Assignment
1 Mic-L 2 GND
3 Mic-R 4 N.C.
5 Line-Out-R 6 Mic-JD (sense)
7 GND 8 N.C.
9 Line-Out-L 10 Line-JD (sense)
Front Audio Pin Assignment
The Digital I/O (DIO) connector allows for input/output signals of digital logical states defined
by voltage levels.
Pin Assignment Pin Assignment
1 DIO_7 2 DIO_6
3 DIO_5 4 DIO_4
5 DIO_3 6 DIO_2
7 DIO_1 8 DIO_0
9 DIO Power 10 GND
Digital I/O Pin Assignment
Digital I/O
X Internal I/O Connectors
Intel
BGA 1528
1
1
1
1
1
1
1 2
9 10
1 2
9
1
1
1
5
2
2
56
1
2
9
1
6
5
2
1
2
10
1
12
56
10
1
3940
1
1
2
5
6
1
1
ON
234
Intel
BGA 1528
1
1
1
1
1
1
1 2
9 10
1 2
9
1
1
1
5
2
2
56
1
2
9
1
6
5
2
1
2
10
1
12
56
10
1
3940
1
1
2
5
6
1
1
ON
234
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