Avalue Technology EMX-APLP-34 User manual

Part No. E2047EMAB00R
EMX-APLP-34
Intel® Celeron® Processor J3455 with Intel® APLP ITX
Motherboard
User’s Manual
1st Ed –05 October 2022

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FCC Statement
THIS DEVICE COMPLIES WITH PART 15 FCC RULES. OPERATION IS
SUBJECT TO THE FOLLOWING TWO CONDITIONS:
(1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE.
(2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED INCLUDING
INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION.
THIS EQUIPMENT HAS BEEN TESTED AND FOUND TO COMPLY WITH THE LIMITS
FOR A CLASS "A" 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
COMMERCIAL ENVIRONMENT. 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.
OPERATION OF THIS EQUIPMENT IN A RESIDENTIAL AREA IS LIKELY TO CAUSE
HARMFUL INTERFERENCE IN WHICH CASE THE USER WILL BE REQUIRED TO
CORRECT THE INTERFERENCE AT HIS OWN EXPENSE.
Notice
This guide is designed for experienced users to setup the system within the shortest time.
For detailed information, please always refer to the electronic user's manual.
Copyright Notice
Copyright 2022 Avalue Technology Inc., ALL RIGHTS RESERVED.
No part of this document may be reproduced, copied, translated, or transmitted in any form
or by any means, electronic or mechanical, for any purpose, without the prior written
permission of the original manufacturer.
Trademark Acknowledgement
Brand and product names are trademarks or registered trademarks of their respective
owners.
Disclaimer
Avalue Technology Inc. reserves the right to make changes, without notice, to any product,
including circuits and/or software described or contained in this manual in order to improve
design and/or performance. Avalue Technology assumes no responsibility or liability for the
use of the described product(s), conveys no license or title under any patent, copyright, or
masks work rights to these products, and makes no representations or warranties that

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these products are free from patent, copyright, or mask work right infringement, unless
otherwise specified. Applications that are described in this manual are for illustration
purposes only. Avalue Technology Inc. makes no representation or warranty that such
application will be suitable for the specified use without further testing or modification.
Life Support Policy
Avalue Technology’s PRODUCTS ARE NOT FOR USE AS CRITICAL COMPONENTS IN
LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE PRIOR WRITTEN APPROVAL
OF Avalue Technology Inc.
As used herein:
1. Life support devices or systems are devices or systems which, (a) are intended for
surgical implant into body, or (b) support or sustain life and whose failure to perform,
when properly used in accordance with instructions for use provided in the labeling, can
be reasonably expected to result in significant injury to the user.
2. A critical component is any component of a life support device or system whose
failure to perform can be reasonably expected to cause the failure of the life
support device or system, or to affect its safety or effectiveness.
A Message to the Customer
Avalue Customer Services
Each and every Avalue’s product is built to the most exacting specifications to ensure
reliable performance in the harsh and demanding conditions typical of industrial
environments. Whether your new Avalue device is destined for the laboratory or the factory
floor, you can be assured that your product will provide the reliability and ease of operation
for which the name Avalue has come to be known.
Your satisfaction is our primary concern. Here is a guide to Avalue’s customer services. To
ensure you get the full benefit of our services, please follow the instructions below carefully.
Technical Support
We want you to get the maximum performance from your products. So if you run into
technical difficulties, we are here to help. For the most frequently asked questions, you can
easily find answers in your product documentation. These answers are normally a lot more
detailed than the ones we can give over the phone. So please consult the user’s manual
first.
To receive the latest version of the user’s manual; please visit our Web site at:
http://www.avalue.com.tw/

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Product Warranty
Avalue warrants to you, the original purchaser, that each of its products will be free from
defects in materials and workmanship for two years from the date of purchase.
This warranty does not apply to any products which have been repaired or altered by
persons other than repair personnel authorized by Avalue, or which have been subject to
misuse, abuse, accident or improper installation. Avalue assumes no liability under the
terms of this warranty as a consequence of such events. Because of Avalue’s high
quality-control standards and rigorous testing, most of our customers never need to use our
repair service. If any of Avalue’s products is defective, it will be repaired or replaced at no
charge during the warranty period. For out-of-warranty repairs, you will be billed according
to the cost of replacement materials, service time, and freight. Please consult your dealer
for more details. If you think you have a defective product, follow these steps:
1. Collect all the information about the problem encountered. (For example,
CPU type and speed, Avalue’s products model name, hardware & BIOS
revision number, other hardware and software used, etc.) Note anything
abnormal and list any on-screen messages you get when the problem occurs.
2. Call your dealer and describe the problem. Please have your manual, product,
and any helpful information available.
3. If your product is diagnosed as defective, obtain an RMA (return material
authorization) number from your dealer. This allows us to process your good
return more quickly.
4. Carefully pack the defective product, a complete Repair and Replacement
Order Card and a photocopy proof of purchase date (such as your sales
receipt) in a shippable container. A product returned without proof of the
purchase date is not eligible for warranty service.
5. Write the RMA number visibly on the outside of the package and ship it
prepaid to your dealer.

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Content
1. Getting Started............................................................................................................8
1.1 Safety Precautions....................................................................................................8
1.2 Packing List...............................................................................................................8
1.3 Document Amendment History .................................................................................9
1.4 Manual Objectives...................................................................................................10
1.5 System Specifications.............................................................................................11
1.6 Architecture Overview—Block Diagram..................................................................14
2. Hardware Configuration...........................................................................................15
2.1 Product Overview....................................................................................................16
2.2 Jumper and Connector List.....................................................................................18
2.3 Setting Jumpers & Connectors ...............................................................................21
2.3.1 Serial port 1/2/3/4/5/6 pin9 signal select (JRI1/JRI2/JRI3/JRI4/JRI5/JRI6)................................... 21
2.3.2 SATA2/MSATA1 mPCIe slot selector (JMSW1)............................................................................ 21
2.3.3 LVDS Back Light power selection (JSBKL1).................................................................................. 22
2.3.4 AT/ATX Power Mode Select (JSATX1).......................................................................................... 22
2.3.5 Clear CMOS (CMOS1)................................................................................................................... 23
2.3.6 LCD Inverter connector (JBKL1).................................................................................................... 23
2.3.7 Serial port 1 connector (COM1)..................................................................................................... 24
2.3.8 Serial port 2 connector (COM2)..................................................................................................... 24
2.3.9 Serial port 3 connector (COM3)..................................................................................................... 25
2.3.10 Serial port 4 connector (COM4)..................................................................................................... 25
2.3.11 Serial port 6 connector (COM6)..................................................................................................... 26
2.3.12 Serial port 5 connector (COM5)..................................................................................................... 26
2.3.13 Serial Port 1 RS485/422 Mode connector (JRS485) .................................................................... 27
2.3.14 General purpose I/O connector (DIO1)......................................................................................... 27
2.3.15 SATA Power connector 1/2 (SPWR1/2)........................................................................................ 28
2.3.16 Power connector (PWR1).............................................................................................................. 28
2.3.17 USB2.0 connector (USB3)............................................................................................................. 29
2.3.18 USB2.0 connector (USBH1).......................................................................................................... 29
2.3.19 USB2.0 connector (USBH2).......................................................................................................... 30
2.3.20 Battery connector (BT1) ................................................................................................................ 30
2.3.21 LVDS connector (LVDS1).............................................................................................................. 31
2.3.22 Front Audio connector (FAUD1).................................................................................................... 32
3.3.22.1 Signal Description –Front Audio connector (FAUD1)............................................................ 32
2.3.23 LPC connector (JLPC1)................................................................................................................. 33
2.3.24 EC_Program (EC1) ....................................................................................................................... 33
2.3.25 SPI connector (SPI1)..................................................................................................................... 34

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2.3.26 Sony/Philips Digital Interface (SPDIF1)......................................................................................... 34
2.3.27 Speaker connector (SPK1)............................................................................................................ 35
2.3.28 Front Panel connector 1 (FPT1).................................................................................................... 35
2.3.29 Front Panel connector 2 (FPT2).................................................................................................... 36
2.3.30 LED indicator connector 1 (LED1)................................................................................................. 36
2.3.31 LED indicator connector 2 (LED2)................................................................................................. 37
2.3.32 CPU fan connector (FAN1)............................................................................................................ 37
2.3.33 Digital Microphone connector (DMIC1)......................................................................................... 38
2.3.34 eDP connector (EDP1).................................................................................................................. 38
2.3.35 I2C connector (I2C1)..................................................................................................................... 39
3.BIOS Setup....................................................................................................................40
3.1 Introduction.............................................................................................................41
3.2 Starting Setup .........................................................................................................41
3.3 Using Setup ............................................................................................................42
3.4 Getting Help............................................................................................................43
3.5 In Case of Problems................................................................................................43
3.6 BIOS setup..............................................................................................................44
3.6.1 Main Menu...................................................................................................................................... 44
3.6.1.1 System Language.................................................................................................................. 45
3.6.1.2 System Date.......................................................................................................................... 45
3.6.1.3 System Time.......................................................................................................................... 45
3.6.2 Advanced Menu ............................................................................................................................. 45
3.6.2.1 Trusted Computing................................................................................................................ 46
3.6.2.2 ACPI Settings ........................................................................................................................ 46
3.6.2.3 IT8528 Super IO Configuration.............................................................................................. 47
3.6.2.3.1 Serial Port 1 Configuration .................................................................................................... 48
3.6.2.3.2 Serial Port 2 Configuration .................................................................................................... 49
3.6.2.3.3 Serial Port 3 Configuration .................................................................................................... 49
3.6.2.3.4 Serial Port 4 Configuration .................................................................................................... 50
3.6.2.3.5 Serial Port 5 Configuration .................................................................................................... 50
3.6.2.3.6 Serial Port 6 Configuration .................................................................................................... 51
3.6.2.4 H/W Monitor........................................................................................................................... 51
3.6.2.5 S5 RTC Wake Settings.......................................................................................................... 52
3.6.2.6 Serial Port Console Redirection............................................................................................ 52
3.6.2.6.1 Legacy Console Redirection Settings ................................................................................... 53
3.6.2.7 CPU Configuration................................................................................................................. 54
3.6.2.7.1 Socket 0 CPU Information..................................................................................................... 55
3.6.2.7.2 CPU Power Management Configuration............................................................................... 55
3.6.2.8 USB Configuration................................................................................................................. 56
3.6.2.9 Network Stack Configuration................................................................................................. 57

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3.6.2.10 CSM Configuration................................................................................................................ 58
3.6.2.11 NVMe Configuration.............................................................................................................. 58
3.6.2.12 Security Configuration........................................................................................................... 59
3.6.2.13 System Component............................................................................................................... 59
3.6.3 Chipset........................................................................................................................................... 60
3.6.3.1 North Bridge............................................................................................................................... 60
3.6.3.2 South Bridge.............................................................................................................................. 61
3.6.3.3 Uncore Configuration................................................................................................................. 61
3.6.3.4 South Cluster Configuration....................................................................................................... 63
3.6.3.4.1 HD-Audio Configuration......................................................................................................... 63
3.6.3.4.2 PCI Express Configuration.................................................................................................... 64
3.6.3.4.2.1 PCI Express Root Port 3(i225/i226)...................................................................................... 64
3.6.3.4.2.2 PCI Express Root Port 4(i225/i226)...................................................................................... 65
3.6.3.4.2.3 PCI Express Root Port 5(M.2/PCIe slot)............................................................................... 66
3.6.3.4.2.4 PCI Express Root Port 6(mPCIe).......................................................................................... 67
3.6.3.4.3 SATA Drives.......................................................................................................................... 68
3.6.3.4.4 SCC Configuration................................................................................................................. 69
3.6.3.4.5 USB Configuration................................................................................................................. 69
3.6.4 Security .......................................................................................................................................... 70
3.6.4.1 Secure Boot........................................................................................................................... 70
3.6.4.1.1 Secure Boot........................................................................................................................... 71
3.6.5 Boot................................................................................................................................................ 72
3.6.6 Save and exit.................................................................................................................................. 73
3.6.6.1 Save Changes and Reset.......................................................................................................... 73
3.6.6.2 Discard Changes and Reset...................................................................................................... 73
3.6.6.3 Restore Defaults........................................................................................................................ 74
3.6.6.4 Launch EFI Shell from filesystem device................................................................................... 74
4. Drivers Installation.......................................................................................................75
4.1 Install Chipset Driver...............................................................................................76
4.2 Install VGA Driver....................................................................................................77
4.3 Install TXE Driver....................................................................................................78
4.4 Install Audio Driver (For Realtek ALC888S HD Audio)............................................79
4.5 Install LAN Driver (For Intel I226LM).......................................................................80
5. Mechanical Drawing ....................................................................................................81

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1. Getting Started
1.1 Safety Precautions
Warning!
Always completely disconnect the power cord from your
chassis whenever you work with the hardware. Do not
make connections while the power is on. Sensitive
electronic components can be damaged by sudden power
surges. Only experienced electronics personnel should
open the PC chassis.
Caution!
Always ground yourself to remove any static charge before
touching the CPU card. Modern electronic devices are very
sensitive to static electric charges. As a safety precaution,
use a grounding wrist strap at all times. Place all electronic
components in a static-dissipative surface or static-shielded
bag when they are not in the chassis.
1.2 Packing List
Before you begin installing your single board, please make sure that the
following materials have been shipped:
1 x EMX-APLP-34 motherboard
2 x SATA cables
1 x SATA power Cable
1 x I/O shield

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1.3 Document Amendment History
Revision
Date
By
Comment
1st
October 2022
Avalue
Initial Release

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1.4 Manual Objectives
This manual describes in details Avalue Technology EMX-APLP-34 Single Board.
We have tried to include as much information as possible but we have not duplicated
information that is provided in the standard IBM Technical References, unless it proved to
be necessary to aid in the understanding of this board.
We strongly recommend that you study this manual carefully before attempting to set up
EMX-APLP-34 or change the standard configurations. Whilst all the necessary information
is available in this manual we would recommend that unless you are confident, you contact
your supplier for guidance.
Please be aware that it is possible to create configurations within the CMOS RAM that
make booting impossible. If this should happen, clear the CMOS settings, (see the
description of the Jumper Settings for details).
If you have any suggestions or find any errors regarding this manual and want to inform us
of these, please contact our Customer Service department with the relevant details.

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1.5 System Specifications
System
CPU
Intel® Celeron® Processor J3455 (2M Cache, up to 2.30 GHz)
BIOS
AMI uEFI BIOS, 128Mbit SPI Flash ROM
I/O Chip
EC IT8528E
System Memory
Two 204-pin DDR3L 1600MHz SO-DIMM socket, supports up to 16GB Max
Watchdog Timer
H/W Reset, 1sec. –65535sec./min.1sec. or 1min. step
H/W Status
Monitor
CPU temperature monitoring
Voltages monitoring
CPU fan speed control
Expansion Slot
mPCIe
1 x Full size Mini PCI-e support mSATA (SATA III and mSATA By auto switch IC)
with 1 x SIM card slot
M.2
1 x M.2 (2230) E-Key, support WiFi module (default) or 1 x PCI-e x1 By control EC
Note: BIOS selection for M.2 E-Key and PCI-e slot x1. Default setting at PCI-e slot
x1, therefore, M.2 function is needed OEM BIOS.
Other
S0/S3/S4/S5
Storage
mSATA
1 x Full size Mini PCI-e support mSATA (SATA III and mSATA By auto switch IC)
with 1 x SIM card slot
SATA
2 x SATA III, 2 x SATA Power
Edge I/O
LAN
2 x RJ-45
USB 3.1
4 x USB 3.0
DP
1 x DP++
HDMI
1 x HDMI/DP
S-VIDEO
Line-out & Mic-in
DC Input
1 x DC Jack lockable connector type
Onboard I/O
COM
COM1:
COM 1 support RS- RS232/422/485 connector, with / +5V & +12V Supported and
RS422/485 by BIOS setting
1 x 2 x 5 pin, pitch 2.00mm connector for COM1: support RS-232 connector, Pin 9
with / +5V & +12V Supported
1 x 2 x 3 pin, pitch 2.00mm connector for COM1: support RS422/485 connector, Pin
5 with / +5V Supported
COM2~6:

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5 x 2 x 5 pin, pitch 2.00mm connector for COM2~6: support RS-232 connector, Pin 9
with / +5V & +12V Supported
USB 2.0
2 x 2 x 5 pin, pitch 2.54mm connector for 4 USB 2.0
1 x 1 x 5 pin, pitch 2.54mm connector for 1 USB 2.0
GPIO
1 x 2 x 10 pin, pitch 2.00mm connector for GPIO: 16 bits
SATA Power
2 x SATA Power
CPU/System
FAN
1 x 1 x 4 pin, pitch 2.54mm CPU fan connector with smart fan function supported
Buzzer
Onboard
Front Panel
1 x 2 x 5 pin, pitch 2.54mm connector for front panel 1
1 x 2 x 5 pin, pitch 2.54mm connector for front panel 2
RTC Battery
1 x horizontal type battery connector (Battery cable 170mm length)
AT/ATX Selector
1 x 1 x 3 pin, pitch 2.54mm connector for AT/ATX mode
Clear CMOS
1 x 3 pin ,pitch 2.00mm connector for CMOS clear
LVDS
1 x 2 x 20 pin, pitch 1.25mm connector for LVDS (must be using DF13-2S-1.25C
connector)
LCD Backlight
Brightness
1 x 3 pin, pitch 2.54mm connector LCD backlight brightness adjustment (PWM/DC)
LCD Inverter
1 x 1 x 5 pin, pitch 2.00mm Wafer connector for LCD inverter backlight connector
(5V/12V)
LPC
1 x 2 x 5 pin, pitch 2.0mm connector for LPC
BIOS SPI
1 x 2 x 4 pin, pitch 2.00mm connector for BIOS SPI
EC Debug
1 x 2 x 5 pin, pitch 2.00mm connector for EC SPI
Audio
1 x 2 x 5 pin, pitch 2.54mm connector for front Audio
DC-Input
1 x 2 x 2 pin, pitch 4.20mm connector for power input connector
1 x DC Jack lockable connector type
Other
1 x 2 x 10 pin, pitch 1.25mm connector for eDP
1 x 4 pin, pitch 2.00mm connector for WiFi Activity Indicator LED
Display
Graphic Chipset
Intel® Apollo Lake® SoC integrated Graphics
Spec. &
Resolution
1 x HDMI/DP1: (either one by switch IC)
HDMI 1.4b: 3840x2160 @30Hz / DP 1.2 4096x2160@60Hz
1 x DP++ (DP2): DisplayPort 1.2: 4096x2160 @60Hz
2CH 18/24bits LVDS 1920 x 1080 (Chrontel. CH7511B eDP to LVDS Converter)
Co-lay eDP 1.3: 3840 x2160 @60Hz BOM optional
Note: This resolution is actual test result.
Multiple Display
Triple Display
Multiple Display: LVDS > (DP1/HDMI) > DP2)
Audio

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Audio Codec
Realtek ALC888S co-lay ALC897 (Default: ALC888S) HD Audio Codec
Amplifier
Realtek ALC105 Stereo Class-D 2W 4Ω x 2
Ethernet
LAN Chipset
2 x Intel® I226LM 2.5 Gigabit Ethernet
LAN Spec.
2 x 10/100/1000/2.5G Base-T compatible
Mechanical & Environmental Specification
Power
Requirement
DC in +12V~24V
ACPI
Single power ATX Support S0, S3, S4, S5
ACPI 3.0 Compliant
Power Mode
AT / ATX mode Switchable Through Jumper
Operating Temp.
0~60°C (32~140°F) with 0.5m/s air flow
Storage Temp.
-40~ +75°C
Operating
Humidity
40°C @ 95% Relative Humidity, Non-condensing
Size (L x W)
(Please consult
product
engineers for
the production
feasibility if the
size is larger
than 410x360mm
or smaller than
80x70mm)
6.7" x 6.7" (170mm x 170mm)
Weight
0.40kg
Note: Specifications are subject to change without notice.

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1.6 Architecture Overview—Block Diagram
The following block diagram shows the architecture and main components of EMX-APLP-34.

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2. Hardware
Configuration

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2.1 Product Overview

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2.2 Jumper and Connector List
You can configure your board to match the needs of your application by setting jumpers. A
jumper is the simplest kind of electric switch.
It consists of two metal pins and a small metal clip (often protected by a plastic cover) that
slides over the pins to connect them. To “close” a jumper you connect the pins with the clip.
To “open” a jumper you remove the clip. Sometimes a jumper will have three pins, labeled 1,
2, and 3. In this case, you would connect either two pins.
The jumper settings are schematically depicted in this manual as follows:
A pair of needle-nose pliers may be helpful when working with jumpers.
Connectors on the board are linked to external devices such as hard disk drives, a
keyboard, or floppy drives. In addition, the board has a number of jumpers that allow you to
configure your system to suit your application.
If you have any doubts about the best hardware configuration for your application, contact
your local distributor or sales representative before you make any changes.
The following tables list the function of each of the board’s jumpers and connectors.
Jumpers
Label
Function
Note
JRI1/2/3/4/5/6
Serial port 1/2/3/4/5/6 pin9 signal
select
3 x 2 header, pitch 2.00mm
JMSW1
SATA2/MSATA1 mPCIe slot selector
6 x 2 header, pitch 2.00mm
JSBKL1
LVDS Back Light power selection
3 x 1 header, pitch 2.54mm
JSATX1
AT/ATX Power Mode Select
3 x 1 header, pitch 2.54mm
CMOS1
Clear CMOS
3 x 1 header, pitch 2.00mm
Connectors
Label
Function
Note
FAN1
CPU fan connector
4 x 1 wafer, pitch 2.54mm
FPT1/2
Front Panel connector 1/2
5 x 2 header, pitch 2.54mm
DIMM1/2
204-pin DDR3L DIMM socket

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FAUD1
Front Audio connector
5 x 2 header, pitch 2.54mm
JBKL1
LCD Inverter connector
5 x 1 wafer, pitch 2.00mm
Compatible with Connector: JST
PHR-5
SPI1
SPI connector
4 x 2 header, pitch 2.00mm
COM1/2/3/4/5/6
Serial Port 1/2/3/4/5/6 connector
5 x 2 header, pitch 2.00mm
JRS485
Serial Port 1 RS485/422 Mode
connector
3 x 2 header, pitch 2.00mm
DIO1
General purpose I/O connector
10 x 2 header, pitch 2.00mm
SPK1
Speaker connector
4 x 1 wafer, pitch 2.00mm
LVDS1
LVDS Connector
DIN 40-pin wafer, pitch 1.25mm
Compatible with Connector:
Hirose DF13-40DS-1.25C
USB1/2
USB connector 1/2
USB3
USB 2.0 connector
5 x 2 header, pitch 2.54mm
USBH1
USB 2.0 connector
5 x 2 header, pitch 2.54mm
USBH2
USB 2.0 connector
5 x 1 header, pitch 2.54mm
SPDIF1
Sony/Philips Digital Interface
3 x 1 header, pitch 2.54mm
LAN1/2
RJ-45 Ethernet 1/2
PCIE1
PCIe connector
LED1/2
LED indicator connector 1/2
4 x 1 header, pitch 2.00mm
DP1/2
DP connector 1/2
EDP1
eDP connector
10 x 2 wafer, pitch 1.25mm
BT1
Battery connector
2 x 1 wafer, pitch 1.25mm
M2KA1
M.2 Type A 2230 connector
MPCIE1
Mini-PCIe connector 1
JLPC1
LPC connector
5 x 2 header, pitch 2.00mm
PWR1
Power connector
2 x 2 wafer, pitch 4.20mm
SATA1/2
Serial ATA connector 1/2
SPWR1/2
SATA Power connector 1/2
4 x 1 wafer, pitch 2.54mm
EC1
EC_Program
5 x 2 header, pitch 2.00mm
DCIN1
DC Power-in connector
I2C1
I2C connector
5 x 1 header, pitch 2.00mm
HDMI1
HDMI connector
LOUT1
Line-out audio jack
MIC1
Mic-in audio jack
DMIC1
Digital Microphone connector
5 x 1 header, pitch 2.54mm

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SIM1
SIM card slot