VIA Technologies EPIA-E900-12Q User Manual
1.01-02162017-111600
USER MANUAL
EPIA-E900
Pico-ITXe board
Copyright
Copyright © 2015-2017 VIA Technologies Incorporated. All rights reserved.
No part of this document may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language,
in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise without the prior written
permission of VIA Technologies, Incorporated.
Trademarks
All trademarks are the property of their respective holders.
Disclaimer
No license is granted, implied or otherwise, under any patent or patent rights of VIA Technologies. VIA Technologies makes no
warranties, implied or otherwise, in regard to this document and to the products described in this document. The information
provided in this document is believed to be accurate and reliable as of the publication date of this document. However, VIA
Technologies assumes no responsibility for the use or misuse of the information (including use or connection of extra
device/equipment/add-on card) in this document and for any patent infringements that may arise from the use of this document. The
information and product specifications within this document are subject to change at any time, without notice and without obligation
to notify any person of such change.
VIA Technologies, Inc. reserves the right the make changes to the products described in this manual at any time without prior notice.
Regulatory Compliance
FCC-A Radio Frequency Interference Statement
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
personal expense.
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.
Notice 2
Shielded interface cables and A.C. power cord, if any, must be used in order to comply with the emission limits.
Notice 3
The product described in this document is designed for general use, VIA Technologies assumes no responsibility for the conflicts or
damages arising from incompatibility of the product. Check compatibility issue with your local sales representatives before placing
an order.
Battery Recycling and Disposal
Only use the appropriate battery specified for this product.
Do not re-use, recharge, or reheat an old battery.
Do not attempt to force open the battery.
Do not discard used batteries with regular trash.
Discard used batteries according to local regulations.
Safety Precautions
Always read the safety instructions carefully.
Keep this User's Manual for future reference.
All cautions and warnings on the equipment should be noted.
Keep this equipment away from humidity.
Lay this equipment on a reliable flat surface before setting it up.
Make sure the voltage of the power source and adjust properly 110/220V before connecting the
equipment to the power inlet.
Place the power cord in such a way that people cannot step on it.
Always unplug the power cord before inserting any add-on card or module.
If any of the following situations arises, get the equipment checked by authorized service personnel:
The power cord or plug is damaged.
Liquid has penetrated into the equipment.
The equipment has been exposed to moisture.
The equipment has not worked well or you cannot get it work according to User's Manual.
The equipment has dropped and damaged.
The equipment has obvious sign of breakage.
Do not leave this equipment in an environment unconditioned or in a storage temperature above
60°C (140°F). The equipment may be damaged.
Do not leave this equipment in direct sunlight.
Never pour any liquid into the opening. Liquid can cause damage or electrical shock.
Do not place anything over the power cord.
Do not cover the ventilation holes. The openings on the enclosure protect the equipment from
overheating
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Box Contents
EPIA-E900-12QE
1 x EPIA-E900 board
1 x SATA cable
1 x SATA power cable
1 x DC-in power cable
Ordering Information
Part Number Description
EPIA-E900-12QE
Pico-ITXe board with 1.2GHz VIA Eden® X4 processor, Mini HDMI,
2 x USB 3.0, 2 x USB 2.0, 2 x COM, 2 x Gigabit Ethernet, SATA and 12V
DC-in
Optional Accessories
Wireless Accessories
Part Number Description
00GO27100BU2B0D0
VNT9271 IEEE 802.11b/g/n USB Wi-Fi dongle
EMIO-1533-00A2
VNT9271 IEEE 802.11b/g/n USB Wi-Fi module with assembly kit and
antenna.
EMIO-5531-00A1
VAB-820-W IEEE 802.11b/g/n USB Wi-Fi & Bluetooth module with
assembly kit and antenna.
EPIA-E900 User Manual
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Table of Contents
1. Product Overview ........................................................................................................................ 1
1.1.
Key Features and Benefits ...............................................................................................................................1
1.1.1. VIA Eden® X4 Processor ............................................................................................................................1
1.1.2. VIA VX11H MSP Chipset ...........................................................................................................................1
1.1.3. Expansion Option .......................................................................................................................................1
1.2.
Product Specifications .....................................................................................................................................2
1.3.
Layout Diagram .................................................................................................................................................5
1.4.
Dimensions .........................................................................................................................................................7
1.5.
Height Distribution ...........................................................................................................................................8
2. I/O Interface................................................................................................................................... 9
2.1.
External I/O Ports .............................................................................................................................................9
2.1.1. LED Indicators ........................................................................................................................................... 10
2.1.2. Power Button............................................................................................................................................. 10
2.1.3. COM Port ................................................................................................................................................... 11
2.1.4. USB 3.0 Port .............................................................................................................................................. 12
2.1.5. Gigabit Ethernet Port ............................................................................................................................... 13
2.1.6. Mini HDMI® Port ....................................................................................................................................... 14
2.1.7. USB 2.0 Port .............................................................................................................................................. 15
2.2.
Onboard Connectors ................................................................................................................................... 16
2.2.1. DC-In Connector ...................................................................................................................................... 16
2.2.2. SATA Connector ...................................................................................................................................... 17
2.2.3. SATA Power Connector ......................................................................................................................... 18
2.2.4. SPI Pin Header ........................................................................................................................................... 19
2.2.5. CPU Fan Connector ................................................................................................................................. 20
2.2.6. CMOS Battery Connector ....................................................................................................................... 21
2.2.7. USB 2.0 Connector .................................................................................................................................. 22
2.2.8. LPC Connector .......................................................................................................................................... 23
3. Jumpers ........................................................................................................................................ 24
3.1.
Clear CMOS Jumper ..................................................................................................................................... 25
3.2.
AT/ATX Power Mode Select Jumper ....................................................................................................... 26
4. Expansion Connectors ............................................................................................................... 27
4.1.
MXM Connector ............................................................................................................................................ 27
4.2.
DDR3 SODIMM Memory Slot ..................................................................................................................... 30
4.2.1. Installing a Memory Module ................................................................................................................. 31
4.2.2. Removing a Memory Module ................................................................................................................ 32
5. Hardware Installation ................................................................................................................ 33
5.1.
Installing the VNT9271 USB Wi-Fi Dongle.............................................................................................. 33
5.2.
Installing the EMIO-1533 USB Wi-Fi Module ........................................................................................... 34
5.3. Installing the EMIO-5531 USB Wi-Fi + Bluetooth Module .................................................................................. 36
5.4.
Installing into a Chassis ................................................................................................................................ 38
5.4.1. Suggested minimum chassis dimensions ............................................................................................ 38
5.4.2. Suggested minimum chassis height ...................................................................................................... 39
5.4.3. Suggested keepout areas ....................................................................................................................... 40
6. BIOS Setup Utility ...................................................................................................................... 41
6.1.
Entering the BIOS Setup Utility .................................................................................................................. 41
6.2.
Control Keys ................................................................................................................................................... 41
6.3.
Getting Help ................................................................................................................................................... 41
6.4.
System Overview ........................................................................................................................................... 42
6.4.1. BIOS Information ...................................................................................................................................... 42
6.4.2. Memory Information ................................................................................................................................ 42
6.4.3. System Language ...................................................................................................................................... 42
6.4.4. System Date ............................................................................................................................................... 42
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6.4.5. System Time .............................................................................................................................................. 42
6.5.
Advanced Settings ........................................................................................................................................ 43
6.5.1. ACPI Settings ............................................................................................................................................. 44
6.5.1.1. Enable Hibernation ....................................................................................................................... 44
6.5.1.2. ACPI Sleep State ............................................................................................................................ 44
6.5.2. S5 RTC Wake Settings ............................................................................................................................. 45
6.5.2.1. Wake system with Fixed Time .................................................................................................... 45
6.5.2.2. Wake system with Dynamic Time .............................................................................................. 45
6.5.3. CPU Configuration ................................................................................................................................... 46
6.5.4. SATA Configuration ................................................................................................................................. 47
6.5.4.1. SATA Mode .................................................................................................................................... 47
6.5.5. USB Configuration .................................................................................................................................... 48
6.5.5.1. Legacy USB Support...................................................................................................................... 48
6.5.5.2. USB3.0 Support .............................................................................................................................. 48
6.5.5.3. XHCI Hand-off ................................................................................................................................ 48
6.5.5.4. EHCI Hand-off ................................................................................................................................ 49
6.5.5.5. USB Mass Storage Driver Support ............................................................................................. 49
6.5.6. F81801 Super IO Configuration ............................................................................................................ 50
6.5.6.1. Serial Port 0 Configuration .......................................................................................................... 50
6.5.6.1.1. Change setting .......................................................................................................................... 50
6.5.6.2. Serial Port 1 Configuration .......................................................................................................... 50
6.5.6.2.1. Uart Transmission Mode ......................................................................................................... 50
6.5.7. F81801 H/W Monitor............................................................................................................................... 51
6.5.7.1. Smart Fan ......................................................................................................................................... 51
6.5.8. Clock Generator Configuration ............................................................................................................. 52
6.5.8.1. CPU Spread Spectrum .................................................................................................................. 52
6.5.8.2. PCIe Spread Spectrum .................................................................................................................. 52
6.6.
OnBoard Device Configuration .................................................................................................................. 53
6.6.1. S5 Wakeup by PME# ............................................................................................................................... 53
6.7.
Chipset Settings ............................................................................................................................................. 54
6.7.1. DRAM Configuration................................................................................................................................ 55
6.7.1.1. DRAM Clock ................................................................................................................................... 55
6.7.1.2. VGA Share Memory (Frame Buffer) ........................................................................................... 55
6.7.2. Video Configuration ................................................................................................................................ 55
6.7.2.1. Dual VGA Enable .......................................................................................................................... 56
6.7.2.2. Primary Graphics Adapter ............................................................................................................ 56
6.7.2.3. HD Audio #1 .................................................................................................................................. 56
6.7.3. PMU_ACPI Configuration ....................................................................................................................... 57
6.7.3.1. Other Control ................................................................................................................................. 57
6.7.3.1.1. AC Loss Auto-restart ............................................................................................................... 58
6.7.3.1.2. USB S4 WakeUp ....................................................................................................................... 58
6.7.4. Others Configuration ............................................................................................................................... 59
6.7.4.1. WATCHDOG Timer Enable ........................................................................................................ 59
6.7.4.2. WATCHDOG Timer RUN/STOP ................................................................................................. 59
6.7.4.3. WATCHDOG Timer ACTION ..................................................................................................... 59
6.7.4.4. WATCHDOG Timer COUNT ...................................................................................................... 59
6.8.
Boot Settings .................................................................................................................................................. 60
6.8.1. Boot Configuration ................................................................................................................................... 60
6.8.1.1. Setup Prompt Timeout ................................................................................................................. 60
6.8.1.2. BootupNumLock State .................................................................................................................. 60
6.8.1.3. Display Logo ................................................................................................................................... 60
6.8.2. Boot Option Priorities ............................................................................................................................. 60
6.8.2.1. Launch PXE OpROM policy ........................................................................................................ 60
6.9.
Security ............................................................................................................................................................ 61
6.9.1. Security Settings ....................................................................................................................................... 61
6.9.1.1. Administrator Password / User Password ................................................................................ 61
6.10. Save & Exit ...................................................................................................................................................... 62
6.10.1. Save Changes and Exit ............................................................................................................................ 62
6.10.2. Discard Changes and Exit ....................................................................................................................... 62
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6.10.3. Save Changes and Reset ......................................................................................................................... 62
6.10.4. Discard Changes and Reset .................................................................................................................... 62
6.10.5. Save Changes ............................................................................................................................................ 63
6.10.6. Discard Changes ....................................................................................................................................... 63
6.10.7. Save as User Defaults .............................................................................................................................. 63
6.10.8. Restore User Defaults .............................................................................................................................. 63
7. Software and Technical Supports ........................................................................................... 64
7.1.
Microsoft and Linux Support ...................................................................................................................... 64
7.1.1. Driver Installation ..................................................................................................................................... 64
7.2.
Technical Supports and Assistance ........................................................................................................... 64
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List of Figures
Figure 1: Top side layout diagram .....................................................................................................................................5
Figure 2: Bottom side layout diagram ...............................................................................................................................6
Figure 3: Top side dimensions (without heatsink) diagram .........................................................................................7
Figure 4: Front panel side dimensions diagram ..............................................................................................................7
Figure 5: Back panel side dimensions diagram ...............................................................................................................7
Figure 6: Top side height distribution diagram ...............................................................................................................8
Figure 7: Bottom side height distribution diagram.........................................................................................................8
Figure 8: Front panel I/O diagram .....................................................................................................................................9
Figure 9: Back Panel I/O diagram .......................................................................................................................................9
Figure 10: LED indicators diagram .................................................................................................................................. 10
Figure 11: Power button diagram ................................................................................................................................... 10
Figure 12: COM port diagram .......................................................................................................................................... 11
Figure 13: USB 3.0 port diagram ..................................................................................................................................... 12
Figure 14: Gigabit Ethernet port diagram ..................................................................................................................... 13
Figure 15: Mini HDMI® port diagram .............................................................................................................................. 14
Figure 16: USB 2.0 port diagram ..................................................................................................................................... 15
Figure 17: DC-in connector diagram .............................................................................................................................. 16
Figure 18: SATA connector diagram .............................................................................................................................. 17
Figure 19: SATA power connector diagram ................................................................................................................. 18
Figure 20: SPI pin header diagram .................................................................................................................................. 19
Figure 21: CPU fan connector diagram .......................................................................................................................... 20
Figure 22: CMOS battery connector diagram .............................................................................................................. 21
Figure 23: USB 2.0 connector diagram .......................................................................................................................... 22
Figure 24: LPC connector diagram .................................................................................................................................. 23
Figure 25: Jumper settings example ............................................................................................................................... 24
Figure 26: Clear CMOS jumper diagram ....................................................................................................................... 25
Figure 27: AT/ATX power mode select jumper diagram .......................................................................................... 26
Figure 28: MXM connecter diagram ............................................................................................................................... 27
Figure 29: DDR3 SODIMM memory slot diagram ....................................................................................................... 30
Figure 30: Inserting the memory module ...................................................................................................................... 31
Figure 31: Locking the memory module ....................................................................................................................... 31
Figure 32: Disengaging the SODIMM locking clips .................................................................................................... 32
Figure 33: Removing the memory module ................................................................................................................... 32
Figure 34: Inserting the VNT9271 USB Wi-Fi module ................................................................................................ 33
Figure 35: Installing EMIO-1533 USB Wi-Fi module .................................................................................................. 34
Figure 36: Connecting the USB Wi-Fi cable diagram ................................................................................................. 34
Figure 37: Installing Wi-Fi antenna cable diagram ...................................................................................................... 35
Figure 38: Connecting Wi-Fi antenna cable to the EMIO-1533 module ............................................................... 35
Figure 39: Installing EMIO-5531 USB Wi-Fi module .................................................................................................. 36
Figure 40: Connecting the USB Wi-Fi cable diagram ................................................................................................. 36
Figure 41: Installing Wi-Fi antenna cable diagram ...................................................................................................... 37
Figure 42: Connecting Wi-Fi antenna cable to the EMIO-5531 module ............................................................... 37
Figure 43: Suggested minimum chassis dimensions ................................................................................................... 38
Figure 44: Suggested minimum internal chassis ceiling height ................................................................................ 39
Figure 45: Suggested keepout areas (top side) ........................................................................................................... 40
Figure 46: Suggested keepout areas (bottom side) ................................................................................................... 40
Figure 47: Illustration of the Main menu screen .......................................................................................................... 42
Figure 48: Illustration of the Advanced Settings screen ............................................................................................ 43
Figure 49: Illustration of the ACPI Settings screen ..................................................................................................... 44
Figure 50: Illustration of the S5 RTC Wake Settings screen ...................................................................................... 45
Figure 51: Illustration of CPU Configuration screen ................................................................................................... 46
Figure 52: Illustration of SATA Configuration screen................................................................................................. 47
Figure 53: Illustration of PC Health Status screen ...................................................................................................... 48
Figure 54: Illustration of F81801 Super IO Configuration screen ............................................................................ 50
Figure 55: Illustration of F81801 H/W Monitor............................................................................................................ 51
Figure 56: Illustration of Clock Generator Configuration screen ............................................................................ 52
Figure 57: Illustration of OnBoard Device Configuration screen ............................................................................ 53
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Figure 58: Illustration of Chipset Settings screen ........................................................................................................ 54
Figure 59: Illustration of DRAM Configuration screen ............................................................................................... 55
Figure 60: Illustration of Video Configuration screen ................................................................................................ 56
Figure 61: Illustration of PMU_ACPI Configuration screen ....................................................................................... 57
Figure 62: Illustration of Other Control screen ........................................................................................................... 57
Figure 63: Illustration of Others Configuration screen .............................................................................................. 59
Figure 64: Illustration of Boot Settings screen ............................................................................................................. 60
Figure 65: Illustration of Security Settings screen ....................................................................................................... 61
Figure 66: Illustration of Save & Exit screen ................................................................................................................. 62
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List of Tables
Table 1: Top side layout description table .....................................................................................................................5
Table 2: Bottom side layout description table ..............................................................................................................6
Table 3: Layout description table of external I/O ports ..............................................................................................9
Table 4: COM port pinouts .............................................................................................................................................. 11
Table 5: USB 3.0 port pinouts ......................................................................................................................................... 12
Table 6: Gigabit Ethernet port pinout ........................................................................................................................... 13
Table 7: Gigabit Ethernet LED color definition ........................................................................................................... 13
Table 8: Mini HDMI® port pinout ................................................................................................................................... 14
Table 9: USB 2.0 port pinouts ......................................................................................................................................... 15
Table 10: DC-in connector pinout ................................................................................................................................. 16
Table 11: SATA connector pinout ................................................................................................................................. 17
Table 12: SATA power connector pinout .................................................................................................................... 18
Table 13: SPI pin header pinout ..................................................................................................................................... 19
Table 14: CPU fan connector pinout ............................................................................................................................. 20
Table 15: CMOS battery connector pinout .................................................................................................................. 21
Table 16: USB 2.0 connector pinout .............................................................................................................................. 22
Table 17: LPC connector pinout ..................................................................................................................................... 23
Table 18: Clear CMOS jumper settings ........................................................................................................................ 25
Table 19: AT/ATX power mode select jumper settings ........................................................................................... 26
Table 20: MXM connector pinout .................................................................................................................................. 29
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1. Product Overview
The EPIA-E900 is a highly integrated Pico-ITXe board powered by a 1.2GHz VIA Eden® X4 processor and
VIA VX11H MSP chipset that delivers a high performance and rich multimedia features in an ultra-compact
package for a wide range of embedded system applications such as industrial automation, transportation,
medical, and infotainment.
The EPIA-E900 board is fully compatible with Microsoft® and Linux operating systems, and provides an
impressive I/O such as COM ports, mini HDMI® port, Gigabit Ethernet ports, USB 2.0 ports, USB 3.0 ports,
SATA connector for storage devices, and onboard MXM connector for an optional E900-A expansion card.
In addition, EPIA-E900 also includes one DDR3 1333 SODIMM slot that support up to 8GB memory size.
1.1. Key Features and Benefits
1.1.1. VIA Eden
®
X4 Processor
The VIA Eden® X4 is a 64-bit superscalar x86 multi-core processor combine on two dies. It is based on
advanced 28 nanometer process technology packed into an ultra compact NanoBGA2 package measuring
21mm x 21mm. The VIA Eden® X4 processor delivers a superb performance on multi-tasking, multimedia
playback, productivity and internet browsing in a low power budget. In addition, it is ideal for most of
multi-display environment, and embedded system applications.
Note:
For Windows 7 and Windows Server 2008 R2 users only:
If the user encounters the issue such as the operating system recognizing the VIA Dual-Core CPU as two
processors instead of one processor with two cores, Please download and install the hotfix released by
Microsoft to address this issue.
The downloadable hotfix is available at http://support.microsoft.com/kb/2502664
1.1.2. VIA VX11H MSP Chipset
The VIA VX11H is the fourth generation, highly integrated Media System Processor which provides high
quality digital video streaming and high definition video playback. It features the VIA C-640 DX11 3D/2D
graphics and video processor, High Definition video decoder supports DDR3 1333 controller and USB 3.0
interface.
The VIA VX11H offers superb-graphics performance, immersive visual experience, and supports DirectX
11.0 that allows realistic 3D rendering and increased visual acuity. The VIA VX11H is based on a highly
sophisticated power efficient architecture that enables such rich integration into a compact package.
1.1.3. Expansion Option
The EPIA-E900 further proves its versatility by providing an expansion MXM connector for optional
E900-A expansion card. The E900-A expansion card is carrying multiple expansion I/O such as audio jack,
USB 2.0 ports, SATA connector, PCIe slot, LVDS panel connector, DisplayPort/HDMI port, DVP port and
etc.
The companies using the EPIA-E900 with E900-A expansion card obtain the maximum benefits and enable
to slowly roll out upgrades as necessary instead of having to replace everything all at once.
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1.2. Product Specifications
Processor
1.2GHz VIA Eden® X4
21mm x 21mm FCBGA
Chipset
VIA VX11H MSP chipset
33mm x 33mm FCBGA
Graphics
Integrated C-640 DX11 3D/2D graphics and video processor with MPEG-2, WMV9, VC1, and
H.264 video decoding acceleration
System Memory
1 x DDR3 1333 SODIMM slot
Supports up to 8GB memory size
BIOS
AMI Aptio UEFI BIOS, 32Mbit flash memory
Onboard Peripherals
Serial ATA
Supports up to 3Gbps
LAN
2 x Realtek RTL8111G PCIe Gigabit Ethernet controllers
Audio
Through MXM support
Super I/O
Fintek F81801U-I Super I/O controller
Onboard I/O Connectors
1 x DC-in connector
1 x SATA connector
1 x SATA power connector
1 x MXM connector
1 x SPI pin header
1 x CPU fan connector
1 x Clear CMOS jumper
1 x AT/ATX jumper pin header
1 x LPC connector
1 x USB 2.0 connector (support EMIO-1533 & EMIO-5531 module)
1 x CMOS battery connector
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Front Panel I/O
1 x HDD LED
1 x Power LED
1 x Power button
2 x USB 3.0 ports
2 x COM ports
Back Panel I/O
2 x Gigabit Ethernet ports
1 x Mini HDMI® port (Type C)
2 x USB 2.0 ports
MXM Connector interface
Supports one SATA connector
Supports four USB 2.0 ports
Supports one DisplayPort/HDMI interface
Supports DVP interface
Supports single-channel 18/24-bits LVDS panel interface
Supports LPC interface
Supports SMBus interface
Supports SPI interface
Supports one Digital I/O (3GPI + 3GPO) interface
Supports HD Audio interface
Supports one fan controller for System fan
Supports one PCIe x4 interface
Supported Operating System
Microsoft Windows 10
Microsoft Windows 8.1
Microsoft Windows 8
Microsoft Windows 7
Microsoft Windows Embedded Standard 7
Linux
System Monitoring & Management
Wake-on-LAN
Keyboard-Power-on
Timer-Power-on
System Power Management
AC power failure recovery
Watchdog Timer
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Operating Conditions
Operating Temperature
0°C ~55°C
Operating Humidity
0% ~ 95% (relative humidity; non-condensing)
Form Factor
Pico-ITXe (13.8cm x 7.2cm)
Compliance
CE
FCC
Note:
As the operating temperature provided in the specifications is a result of the test performed in VIA’s chamber, a
number of variables can influence this result. Please note that the working temperature may vary depending on
the actual situation and environment. It is highly suggested to execute a solid testing program and take all the
variables into consideration when building the system. Please ensure that the system runs well under the
operating temperature in terms of application.
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1.3. Layout Diagram
Figure 1: Top side layout diagram
Item Description
1 PWR: DC-in connector
2 SATA: SATA connector
3
SATA_PW: SATA power connector
4 MXM: MXM connector
5 SPI: SPI pin header
6 CLEAR_CMOS: Clear CMOS jumper
7 CPUFAN: CPU fan connector
8 AT/ATX: AT/ATX mode jumper
9 Chipset: VIA VX11H MSP
10
CPU: 1.2GHz VIA Eden X4 processor
Table 1: Top side layout description table
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Figure 2: Bottom side layout diagram
Item Description
11 SODIMM: DDR3 SODIMM slot
12 LPC: LPC connector
13 JWLAN: USB 2.0 connector
14 CMOS battery connector
Table 2: Bottom side layout description table
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1.4. Dimensions
Figure 3: Top side dimensions (without heatsink) diagram
Figure 4: Front panel side dimensions diagram
Figure 5: Back panel side dimensions diagram
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1.5. Height Distribution
Figure 6: Top side height distribution diagram
Figure 7: Bottom side height distribution diagram
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2. I/O Interface
The VIA EPIA-E900 has a wide selection of interfaces. It includes a selection of frequently used ports as
part of the external I/O coastline.
2.1. External I/O Ports
Figure 8: Front panel I/O diagram
Figure 9: Back Panel I/O diagram
Item Description
1 Power status LED
2 HDD LED
3 Power button
4 COM port 1
5 COM port 2
6 USB 3.0 port 1
7 USB 3.0 port 2
8 Gigabit Ethernet port 1
9 Gigabit Ethernet port 2
10 Mini HDMI® port
11 USB 2.0 port 1
12 USB 2.0 port 2
Table 3: Layout description table of external I/O ports
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2.1.1. LED Indicators
There are two LEDs on the front panel that indicates the status of the system:
HDD LED flashes in red and indicates hard drive storage activity for SATA drive.
Power Status LED flashes in green and indicates the system’s power status.
Figure 10: LED indicators diagram
2.1.2. Power Button
The EPIA-E900 comes with a power button that supports Soft power On/Off (Instant Off or 4 second
delay), and Suspend.
Figure 11: Power button diagram
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2.1.3. COM Port
The EPIA-E900 provides two COM (D-sub 9-pin male) ports located on the front panel. The COM ports
labeled as COM1 and COM2 supports RS-232 standard. The pinout of the COM ports are shown below.
Figure 12: COM port diagram
COM 1
COM 2
Pin
Signal Pin Signal
1 COM_DCD1 1 COM_DCD2
2 COM_RXD1 2 COM_RXD2
3 COM_TXD1 3 COM_TXD2
4 COM_DTR1 4 COM_DTR2
5 GND 5 GND
6 COM_DSR1 6 COM_DSR2
7 COM_RTS1 7 COM_RTS2
8 COM_CTS1 8 COM_CTS2
9 COM_RI1 9 COM_RI2
Table 4: COM port pinouts
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2.1.4. USB 3.0 Port
There are two USB 3.0 ports also known as SuperSpeed USB located on the front panel. The USB 3.0 port
has a maximum data transfer rate up to 5Gbps and offers a backwards compatible with previous USB 2.0
specifications. The USB 3.0 ports are using the USB Type-A receptacle connector. The pinout of the
typical USB 3.0 port is shown below.
Figure 13: USB 3.0 port diagram
USB 3.0 port 1 USB 3.0 port 2
Pin Signal Pin
Signal
1 +5V 1 +5V
2 Data1- 2 Data23 Data1+ 3 Data2+
4 GND 4 GND
5 RX1- 5 RX26 RX1+ 6 RX2+
7 GND 7 GND
8 TX1- 8 TX29 TX1+ 9 TX2+
Table 5: USB 3.0 port pinouts
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2.1.5. Gigabit Ethernet Port
The EPIA-E900 is equipped with two Gigabit Ethernet ports. The Gigabit Ethernet ports uses 8 Position 8
Contact (8P8C) receptacle connector or commonly referred to as RJ-45. It is fully compliant with IEEE
802.3 (10BASE-T), 802.3u (100BASE-TX), and 802.3ab (1000BASE-T) standards.
Figure 14: Gigabit Ethernet port diagram
Pin Signal
1 Signal pair 1+
2 Signal pair 13 Signal pair 2+
4 Signal pair 3+
5 Signal pair 36 Signal pair 27 Signal pair 4+
8 Signal pair 4-
Table 6: Gigabit Ethernet port pinout
The Gigabit Ethernet port has two individual LED indicators located on the front side to show its
Active/Link status and Speed status.
Link LED
(Left LED on RJ-45 connector)
Active LED
(Right LED on RJ-45 connector)
Link Off Off Off
Speed_10Mbit Off Flash in Yellow color
Speed_100Mbit
The LED is always On in Green color Flash in Yellow color
Speed_1000Mbit
The LED is always On in Orange color Flash in Yellow color
Table 7: Gigabit Ethernet LED color definition
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