Hope this helps.

John

ps via has a board similiar to what your running but it is designed from
scratch to run from just 12v it retails for $183.00.


Product info:

http://www.logicsupply.com/product_i...roducts_id/174


VIA EPIA TC10000 Mini-ITX Motherboard (on-board DC-DC converter) $183.00

The ultimate platform for low profile networked devices, integrating an
onboard 12V DC-DC converter and horizontal SODIMM for complete system
design flexibility.

Measuring 17 x 17cm, the ultra compact VIA EPIA TC Mini-ITX Mainboard is a
highly integrated and configurable x86 platform with rich connectivity and
multimedia options that enables the development of a wealth of small, slim
and low noise networked systems. The rich built-in feature set of the VIA
EPIA TC alleviates the need for system developers to source extra
components, reducing cost and time to market.

VIA EPIA TC Specifications
• VIA C3™ processor
• VIA CLE266 North Bridge, VT8235 South Bridge chipset
• 1 x 200-pin DDR266 SODIMM memory socket, up to 1GB
• Integrated VIA UniChrome™ 2D/3D graphics with integrated MPEG-2
accelerator, motion compensation and DuoView support
• 1 PCI Expansion Slot
• 2 x UltraDMA 133/100/66 IDE connectors, direct DOM support (VCC set to
5V/3.3V on the 20th pin)
• 12V, 5V, 60W Max onboard DC-DC Converter
• VIA Networking Tahoe VT6103 Fast Ethernet 10/100 PHY-ceiver onboard LAN
• VIA VT1612A 2-channel AC'97 codec onboard Audio
• Onboard I/O Connectors: 2 USB connectors for 4 additional USBv2.0 ports, 1
Front-panel audio connectors (mic-in and line-out), 1 Serial port header, 1
LPT port-connector, 1 CIR connector (Switchable for KB/MS), Wake-on LAN
connector, 2 Fan connectors CPU/Sys FAN, 1 + 12V power connector
• Back Panel I/O: 1 DC-in jack, 1 PS2 mouse port, 1 PS2 keyboard port, 1
RJ-45 LAN port, 1 Serial port, 2 USB 2.0 ports, 1 VGA port, 3 Audio jacks:
line-out, line-in and mic-in
• Mini-ITX (4 layer) form factor 17 cm x 17 cm (6.7” x 6.7”)

Additional Information:
• This motherboard has an integrated DC-DC power converter wich needs a 12V
power supply. ONLY use a 12V, 5A (60W) power supply with this board. If you
plan on using this motherboard in a car or boat, you will need to use a
power stabilizer.