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.
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.
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EPIA-M900 User Manual Box Contents and Ordering Information EPIA-M900-16L 1 x EPIA-M900 embedded board 1 x I/O bracket 1 x SATA cable 1 x Driver CD...
Technology Suite, and VIA TwinTurbo™ technology. The VIA EPIA-M900 includes two 1066 MHz DDR3 SODIMM slots that support up to 8 GB. The VIA EPIA-M900 provides support for high fidelity audio with its included VIA VT2021 High Definition Audio codec. In addition it supports two SATA 3Gb/s storage devices.
This ensures that companies using the EPIA-M900 obtain the maximum benefits from its past investments in PCI expansion cards. The VIA EPIA-M900 also includes a 16-Lane PCI Express 2.0 expansion slot that provides protection against obsolescence.
EPIA-M900 User Manual 1.2. Product Specifications Processor VIA Nano X2 1.6 GHz 7 bit VID x86 and x64 compatible 21 x 21 mm Chipset VIA VX900 Unified Digital Media IGP chipset 31 x 31 mm ...
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EPIA-M900 User Manual 1 x SPDIF connector 1 x SMBUS pin header 1 x MFX connector 1 x PCI slot 1 x PCIe x16 slot 1 x 24-bit 2-channel LVDS connector 1 x backlight control connector for inverter power and brightness control ...
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EPIA-M900 User Manual Note: 1. Some system resources require physical memory addresses and may reduce total available memory. 2. PCI Express slot has an effective bandwidth of 8x. 3. This specification is subject to change without prior notice.
EPIA-M900 User Manual 2. I/O Interface The VIA EPIA-M900 has a wide selection of interfaces integrated into the board. It includes a selection of frequently used ports as part of the external I/O coastline. 2.1. External I/O Ports Figure 5: External I/O ports...
EPIA-M900 User Manual 2.1.1. HDMI Port The integrated 19-pin HDMI port uses an HDMI Type A receptacle connector as defined in the HDMI 1.0 specification. The pinout of the HDMI port is as shown below. Figure 6: HDMI port pinout diagram...
EPIA-M900 User Manual 2.1.2. VGA Port The integrated 15-pin VGA port uses a female DE-15 connector. The pinout of the VGA port is as shown below. Figure 7: VGA port pinout diagram Signal Signal Signal Ground VGP_20 GREEN Ground BLUE...
EPIA-M900 User Manual 2.1.3. COM Port The integrated 9-pin COM port uses a male DE-9 connector. The pinout of the COM port is as shown below. Figure 8: COM port pinout diagram Signal Signal Table 3: COM port pinout 2.1.4. USB Ports There are four integrated USB 2.0 ports separated into two USB port stacks.
EPIA-M900 User Manual 2.1.5. Gigabit Ethernet Port The integrated 8-pin Gigabit Ethernet port is using an 8 Position 8 Contact (8P8C) receptacle connector (commonly referred to as RJ45). The pinout of the Gigabit Ethernet port is as shown below. Signal...
EPIA-M900 User Manual 2.2. Onboard Connectors 2.2.1. ATX Power Connector The mainboard has a 20-pin ATX power connector onboard. The ATX power connector is labeled as “CN6”. The pinout of the ATX power connector is shown below. Figure 12: ATX power connector...
EPIA-M900 User Manual 2.2.2. CMOS Battery Slot The mainboard is equipped with a CMOS battery slot, which is compatible with CR2032 coin batteries. The CMOS battery slot is labeled as “BAT1”. When inserting a CR2032 coin battery, be sure that the positive side is facing the locking clip.
EPIA-M900 User Manual 2.2.3. Front Panel Pin Header The front panel pin header consists of 15 pins in a 16-pin block. Pin 15 is keyed. The front panel pin header is labeled as “F_PANEL1”. It provides access to system LEDs, power, reset, and system speaker. The pinout of the front panel pin header is shown below.
EPIA-M900 User Manual 2.2.4. SMBus Pin Header The SMBus pin header consists of three pins. It is labeled as “SMB1”. The pinout of the SMBus pin header is shown below. Signal SMBCK SMBDT Ground Table 10: SMBus pin header pinout Figure 15: SMBus pin header 2.2.5.
EPIA-M900 User Manual 2.2.6. Smart Fan Connectors There are two Smart Fan connectors on board: one for the CPU and one for the chassis. The fan connector for the CPU is labeled as “CN7”. The fan connector for the system is labeled as “CN8”. Smart Fans provide variable fan speeds controlled by the BIOS.
EPIA-M900 User Manual 2.2.7. SATA Connectors The two SATA connectors on board can support up to 3 Gb/s transfer speeds. The SATA connectors are labeled as “SATA1” and “SATA2”. The pinout of the SATA connectors are as shown below. SATA1...
EPIA-M900 User Manual 2.2.8. USB Pin Headers The mainboard has two USB pin header blocks that support up to four USB 2.0 ports. The pin header blocks are labeled as “H_USB1” and “H_USB2”. The pinout of the USB pin headers are shown below.
EPIA-M900 User Manual 2.2.10. COM Pin Headers There are a total of three COM pin headers on the mainboard. Each COM pin header supports the RS-232 standard. The pin headers are labeled as “COM2”, “COM3”, and “COM4”. All of the COM pin headers can support +5V. The pinout of the COM pin headers are shown below.
EPIA-M900 User Manual 2.2.11. PS/2 Keyboard and Mouse Pin Header The mainboard has a pin header for a PS/2 keyboard and mouse. The pin header is labeled as “KBMS1”. The pinout of the pin header is shown below. Figure 21: PS/2 keyboard and mouse pin header...
EPIA-M900 User Manual 2.2.12. LVDS Connector The mainboard has one 40-pin LVDS connector on the bottom side. The LVDS connector is labeled as “LVDS1”. The pinout of the connector is shown below. Signal Signal 1LDC4- PVDD1 1LDC4+ PVDD1 1LDC5- 1LDC5+...
EPIA-M900 User Manual 2.2.13. Inverter Connector The mainboard has one Inverter connector on the bottom side. The Inverter connector is labeled as “BL1”. The pinout of the connector is shown below. Signal IVDD1_CEN IVDD1_CEN ENABLT/ENAVDD1 ENAVDD1/ENABLT1 BRIGHTNESS1_CTL Ground Ground Table 19: Inverter connector pinout...
EPIA-M900 User Manual 2.2.14. Front Audio Pin Header In addition to the TRS audio jacks on the external I/O coastline, the mainboard has a pin header for Line-out and MIC-in. The pin header is labeled as “F_AUDIO1”. The pinout of the pin header is shown below.
EPIA-M900 User Manual 2.2.15. SPDIF Connector The mainboard has one 3-pin SPDIF connector. The connector is labeled as “SPDIF1”. The pinout of the connector is shown below. Signal SPDIFO Ground Table 21: SPDIF connector pinout Figure 25: SPDIF connector...
EPIA-M900 User Manual 2.2.16. Digital I/O Pin Header There are two onboard Digital I/O pin headers that support up to eight GPO and eight GPI signals. The pin headers are labeled as “DIO1” and “DIO2”. The pinout of the pin headers are shown below.
EPIA-M900 User Manual 2.2.17. SPI Pin Header The mainboard has one 8-pin SPI pin header. The pin header is labeled as “SPI1”. The pinout of the pin header is shown below. Figure 27: SPI pin header Signal Signal SPIVCC Ground...
EPIA-M900 User Manual 2.2.18. LPC Pin Header The mainboard has one LPC pin header for debugging purposes. The pin header is labeled as “LPC1”. The pinout of the pin header is shown below. Figure 28: LPC pin header Signal Signal +3.3V...
EPIA-M900 User Manual 3. Jumpers 3.1. Backlight and Panel Power Select Jumper The mainboard has a jumper that controls the voltage delivered to the inverter connector and the LVDS panel connector. The jumper is labeled as “J1”. The jumper settings are shown below.
EPIA-M900 User Manual 3.2. Clear CMOS Jumper The onboard CMOS RAM stores system configuration data and has an onboard battery power supply. To reset the CMOS settings, set the jumper on pins 2 and 3 while the system is off. Return the jumper to pins 1 and 2 afterwards.
EPIA-M900 User Manual 4. Expansion Slots 4.1. DDR3 Memory Slots There are two DDR3 memory slots on the mainboard. The memory slots can accommodate up to 8 GB of 1066 MHz memory . The memory slots are labeled as “DIMM1” and “DIMM2”...
EPIA-M900 User Manual 4.1.1. Installing a Memory Module Step 1 Align the notch on the SODIMM memory module with the protruding wedge on the SODIMM memory slot. Insert the SODIMM memory module at a 30 degree angle relative to the SODIMM memory slot.
EPIA-M900 User Manual 4.1.2. Removing a Memory Module Step 1 To disengage the locking clips, push the locking clips horizontally outward away from the SODIMM memory module. Figure 34: Disengaging the SODIMM locking clips Step 2 When the locking clips have cleared, the SODIMM memory module will automatically pop up to the 30 degree angle.
EPIA-M900 User Manual 4.2. PCI Express Slot The mainboard has one PCI Express slot labeled as “PCIE1”. The PCI Express slot is physically compatible with most PCI Express cards sizes from x1 to x16. See page 77 for details on how to install optional riser card modules. The location of the PCI Express slot is shown below.
EPIA-M900 User Manual 4.3. PCI Slot The onboard PCI slot, labeled as “PCI1”, supports 5V 32-bit PCI cards. It is not compatible with PCI cards requiring 3.3V signaling. The location of the PCI slot is shown below. The orientation of PCI cards can be changed from vertical to horizontal using a riser card module.
5. Hardware Installation 5.1. Installing into a Chassis The EPIA-M900 can be fitted into any chassis that has the mounting holes for compatible with the standard Mini-ITX mounting hole locations. Additionally, the chassis must meet the minimum height requirements for specified areas of the mainboard.
EPIA-M900 User Manual coastline should have a buffer of at least 5.00 mm. The two sides adjacent to the I/O coastline should have at least a 10.00 mm buffer. For the side that is close to the PCI slot, the buffer should be at least 100.00 mm if a riser card module will be used.
EPIA-M900 User Manual 5.1.3. Suggested keepout areas The figure below shows the areas of the mainboard that is highly suggested to leave unobstructed. Figure 40: Suggested keepout areas...
EPIA-M900 User Manual 6. BIOS Setup Utility 6.1. Entering the BIOS Setup Utility Power on the computer and press Delete during the beginning of the boot sequence to enter the BIOS Setup Utility. If the entry point has passed, restart the system and try again.
EPIA-M900 User Manual 6.4. System Overview The System Overview screen is the default screen that is shown when the BIOS Setup Utility is launched. This screen can be accessed by traversing the navigation bar to the “Main” label. Figure 41: Illustration of the Main menu screen 6.4.1.
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EPIA-M900 User Manual This section shows the current system date. Press Tab to traverse right and Shift+Tab to traverse left through the month, day, and year segments. The + and - keys on the number pad can be used to change the values. The weekday name is automatically updated when the date is altered.
EPIA-M900 User Manual 6.5. Advanced Settings The Advanced Settings screen shows a list of categories that can provide access to a sub-screen. Sub-screen links can be identified by the preceding right-facing arrowhead. Figure 42: Illustration of the Advanced Settings screen...
EPIA-M900 User Manual 6.5.1. CPU Configuration The CPU Configuration screen shows detailed information about the built-in processor. In addition to the processor information, the thermal controls can be set. Figure 43: Illustration of the CPU Configuration screen 6.5.1.1. Nano CPU TM3 Function The Nano CPU TM3 Function has two settings: Disabled and Enabled.
EPIA-M900 User Manual 6.5.2. SATA Configuration The SATA Configuration screen shows links to the primary and secondary SATA hard drive information screens. Figure 44: Illustration of SATA Configuration screen 6.5.2.1. Hard Disk Information When a hard drive is detected, the hard drive’s detailed information can be displayed on the SATA-1 Primary/Secondary IDE sub-screen.
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EPIA-M900 User Manual 6.5.2.1.1. PIO Mode The PIO Mode has six possible settings: Auto, 0, 1, 2, 3, and 4. The “Auto” setting enables the BIOS to autonomously determine the appropriate PIO mode for the hard drive. If a manual setting is preferred, then be sure the correct PIO mode of the hard drive is used.
EPIA-M900 User Manual 6.5.3. SuperIO Configuration The SuperIO Configuration screen shows the specific addresses and IRQs of the onboard serial ports. Figure 46: Illustration of SuperIO Configuration screen 6.5.3.1. Serial Ports 1 to 4 Port Address 3F8, 3E8, 2E8 3, 4, 10, 11...
EPIA-M900 User Manual 6.5.4. Hardware Health Configuration The Hardware Health Configuration screen displays the monitored aspects of the mainboard such as CPU temperature, system temperature, fan speeds, and voltages of the power planes. Figure 47. Illustration of Hardware Health Configuration screen 6.5.4.1.
EPIA-M900 User Manual 6.5.5. ACPI Configuration ACPI grants the operating system direct control over system power management. The ACPI Configuration screen can be used to set a number of power management related functions. Figure 48: Illustration of ACPI Configuration screen 6.5.5.1.
EPIA-M900 User Manual 6.5.6. APM Configuration APM enables the operating system to co-work with the BIOS to control the system power management. The APM Configuration screen can be used to set a number of power management functions. Figure 49: Illustration of APM Configuration screen 6.5.6.1.
EPIA-M900 User Manual 6.5.6.2. Restore on AC/Power Loss Restore on AC/Power Loss defines how the system will respond after AC power has been interrupted while the system is on. There are three options. Power Off The Power Off option keeps the system in an off state until the power button is pressed again.
EPIA-M900 User Manual 6.5.6.5. Wake-Up Key The Wake-Up Key feature can only be set when Resume on PS/2 KBC is set to “S3” or “S3/S4/S5”. Otherwise, this feature will be not selectable. This feature has two options. Any Key The Any Key option enables any key on the keyboard to trigger the Wake-Up event.
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EPIA-M900 User Manual 6.5.6.9. RTC Alarm Date (Days) The RTC Alarm Date feature is visible only when Resume on RTC Alarm is enabled. This feature enables the user to specify a specific date each month or daily recurrence. Use the + and - keys on the number pad to change the value of the RTC Alarm Date.
EPIA-M900 User Manual 6.5.7. Event Logging Configuration The Event Logging Configuration screen displays three features for accessing, modifying, and deleting event logs. Figure 50: Illustration of Event Logging Configuration screen 6.5.7.1. View Event Log The View Event Log feature displays all event logs that have been recorded.
EPIA-M900 User Manual 6.5.8. Spread Spectrum Configuration The Spread Spectrum Configuration screen enables access to the CPU Spread Spectrum Setting feature. Figure 51: Illustration of Spread Spectrum Configuration screen 6.5.8.1. CPU Spread Spectrum Setting The CPU Spread Spectrum Setting feature enables the BIOS to modulate the clock frequencies originating from the mainboard.
EPIA-M900 User Manual 6.5.9. USB Configuration The USB Configuration screen shows the number of connected USB devices. Additionally, support for various USB features can be enabled or disabled. Figure 52: Illustration of USB Configuration screen 6.5.9.1. USB Device Mode The USB Device Mode feature enables the mainboard to directly connect to another system through the other system’s USB port.
EPIA-M900 User Manual 6.5.10. CRB Configuration The CRB Configuration screen includes several chipset settings. Figure 53: Illustration of CRB Configuration screen 6.5.10.1. DRAM Clock The DRAM Clock feature enables the user to determine how the BIOS handles the memory clock frequency. The memory clock can either be dynamic or static.
EPIA-M900 User Manual 6.5.10.2. Primary Graphics Adapter The Primary Graphics Adapter feature enables the user to change the order in which the BIOS seeks for a graphics adapter. There are three paths that can be chosen. PCIE PCIE PCIE 6.5.10.3. Dual VGA (PCIE VGA+UMA) The Dual VGA feature enables the user to output display to two display devices.
EPIA-M900 User Manual 6.5.10.7. OnChip HDAC Device The OnChip HDAC Device feature enables the BIOS to control the high definition audio codec in the chipset. This feature has two options: enable and disable. 6.5.10.8. SMBus Device Switch This feature enables support for the new chipset definition of the SMBus interface.
EPIA-M900 User Manual 6.5.10.13. Backlight PWM Clock The Backlight PWM Clock feature enables the user to correct the LCD backlight PWM clock. This feature has four options: 14 kHz, 7 kHz, 110 Hz, 54.4 Hz. 6.5.10.14. VT6130 LAN Control The VT6130 LAN Control feature determines whether the onboard LAN controller will be used or not.
EPIA-M900 User Manual 6.6. Boot Settings The Boot Settings screen has two links that goes to the Boot Settings Configuration and Boot Device Priority screens. Figure 54: Illustration of Boot Settings screen 6.6.1. Boot Settings Configuration The Boot Settings Configuration screen has several features that can be run during the system boot sequence.
EPIA-M900 User Manual 6.6.1.1. Quick Boot The Quick Boot feature enables the BIOS to skip certain tests in order to speed up the boot sequence. This feature has two options: enabled and disabled. 6.6.1.2. Quiet Boot The Quiet Boot feature hides all of the Power-on Self Test (POST) messages during the boot sequence.
EPIA-M900 User Manual 6.6.2. Boot Device Priority The Boot Device Priority screen lists all bootable devices. Figure 56: Illustration of the Boot Device Priority screen 6.6.2.1. 1 Boot Device This feature specifies the boot sequence from the available devices. The available boot devices are detected dynamically and bootable devices will be listed accordingly.
EPIA-M900 User Manual 6.7. Security Settings The Security Settings screen provides a way to restrict access to the BIOS or even the entire system. Figure 57: Illustration of Security Settings screen 6.7.1. Change Supervisor Password This option is for setting a password for accessing the BIOS setup utility.
EPIA-M900 User Manual Limited The Limited option only allows non-critical BIOS settings to be changed. Changes are allowed to the following BIOS features: System Time System Date Quick Boot Display Logo Full Access The Full Access option allows all BIOS settings to be changed except for the Change Supervisor Password and User Access Level options.
EPIA-M900 User Manual 6.8. Exit Options Figure 58: Illustration of Exit Options screen 6.8.1. Save Changes and Exit Save all changes to the BIOS and exit the BIOS Setup Utility. The “F10” hotkey can also be used to trigger this command.
EPIA-M900 User Manual 7. Driver Installation 7.1. Microsoft Driver Support The VIA EPIA-M900 mainboard is compatible with Microsoft operating systems. The latest Windows drivers can be downloaded from the VEPD website at www.viaembedded.com. For embedded operating systems, the related drivers can be found in the VIA Embedded website at www.viaembedded.com.
EPIA-M900 User Manual Appendix A. Power Consumption Report Power consumption tests were performed on the VIA EPIA-M900. The following tables represent the breakdown of the voltage, amp and wattage values while running common system applications. A.1. EPIA-M900-16L The tests were performed based on the following additional components: Memory: Transcend 4GB DDR3 1333 MHz SODIMM (x 2 for 8GB total) HDD: Fujitsu 2.5″...
EPIA-M900 User Manual A.1.3. Power DVD 10 (MPEG2, 1080p) Power Plane Volts Amperes Watts +3.3V 3.328 0.800 2.662 5.020 1.800 9.036 +5VSB 5.070 0.000 0.000 +12V 12.030 0.800 9.624 Total Power 21.322 Consumption A.1.4. Power DVD 10 (WMV9, 1920x1080) Power Plane...
EPIA-M900 User Manual Appendix B. Riser Card Modules There are two riser card modules that are compatible with the EPIA-M900: the PCIE-01 and the EXT-PCI-01. B.1. PCIE-01 The PCIE-01 riser card has a PCIe x16 slot. This card can only be used if the PCI slot is not being used.
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