VIA Technologies NAB-7400 User manual

March 9, 2007 Version 1.1
Operating Guide
NAB-7400 Mainboard

NAB-7400 Operating Guide
March 9, 2007 - i - Version 1.1
Table of Contents
Table of Contents.............................................................................................................................................................................i
VIA NAB-7400 Overview...............................................................................................................................................................1
VIA NAB-7400 Layout...................................................................................................................................................................2
VIA NAB-7400 Specifications........................................................................................................................................................3
VIA NAB-7400 Processor SKUs....................................................................................................................................................4
VIA C7 Processor Overview..........................................................................................................................................................5
VIA NAB-7400 I/O Back Panel Layout ........................................................................................................................................6
VIA NAB-7400 Board Dimensions................................................................................................................................................7
VIA NAB-7400 Height Distribution..............................................................................................................................................8
Power Consumption .......................................................................................................................................................................9
VIA NAB-7400 (MAX)................................................................................................................................................................9
VIA NAB-7400 (MEAN)........................................................................................................................................................... 11
Power Specifications.....................................................................................................................................................................13
VIA NAB-7400 Microsoft and Linux Driver Support ...............................................................................................................14
MICROSOFT DRIVER SUPPORT......................................................................................................................................................14
LINUX DRIVER SUPPORT..............................................................................................................................................................14
Contact...........................................................................................................................................................................................15

NAB-7400 Operating Guide
March 9, 2007 - 1 - Version 1.1
VIA NAB-7400 Overview
The VIA NAB-7400 Mainboard is an ultra compact native x86 platform optimized for today's
demanding network and productivity applications. The mainboard is based on the VIA C7
NanoBGA2 processor featuring an embedded hardware MPEG-2 video decoding accelerator.
Its integrated VIA UniChrome™ Pro AGP graphics provide rich digital media performance.
With the sizable memory bandwidth of DDR2 400/533MHz DIMM and the high data transfer
speeds of ATA-133, the VIA NAB-7400 delivers the increased performance levels required
by today’s digital media applications.
The latest in high-bandwidth connectivity features two USB 2.0 ports (and the ability to
support up to 6 more USB ports using the available onboard pin headers. One of the USB
ports is reserved for wireless LAN), one COM port (and three COM pin headers), and four
10/100 or Gigabit Ethernet ports for extended broadband connectivity. The VIA NAB-7400
also have two mini PCI interface and one 32-bit PCI Golden Finger for expandability options.
The VIA NAB-7400 is compatible with a full range of Mini-ITX chassis as well as FlexATX and
MicroATX enclosures and power supplies.
The VIA NAB-7400 is fully compatible with Microsoft® and Linux operating systems and is
available in a variety of configurations.

NAB-7400 Operating Guide
March 9, 2007 - 2 - Version 1.1
VIA NAB-7400 Layout

NAB-7400 Operating Guide
March 9, 2007 - 3 - Version 1.1
VIA NAB-7400 Specifications
Model Name - NAB-7400
Processor - VIA C7 NanoBGA2 1.0GHz Processor
Chipset - VIA CN700 North Bridge
- VT8237R-Series South Bridge
System Memory - 1 DDR2 400/533 DIMM socket
- Up to 1GB Memory Size
VGA - Integrated VIA UniChromeTM AGP graphics with MPEG-2
Decoding Acceleration
Expansion Interface - 2 Mini PCI interface
- 1 32-bit PCI Golden Finger
Onboard IDE - 2 UltraDMA 133/100/66 Connectors (1x40 pins and 1x44 pins)
Onboard LAN - 4 Intel 82551ER Fast Ethernet PCI Controller or 4 Intel
82541GI of Gigabit Ethernet Controllers
Onboard I/O
Connectors - 1 VGA pin connector - 1 Digital I/O pin connector
- 1 PS/2 pin connector for keyboard and mouse
- 1 PCI pin header for storage module board
- 1 PCI extension pin connector (for BXB board)
- 1 Front panel pin connector
- 1 Front panel LED pin connector for the LAN activity indicators
of Ethernet and wireless
- 2 Fan pin connectors: CPU/Sys FAN
- 2 SATA connectors
- 3 USB pin connectors for 6 additional USB 2.0 ports (1 port for
VNT wireless board)
- 3 Serial port pin connectors for COM2/3/4
- 1 ATX Power connector
Back Panel I/O - 1 Serial port
- 2 USB 2.0 ports
- 4 RJ-45 LAN ports
BIOS - Award BIOS, LPC 4/8Mbit flash memory
Operating System - Windows 2000/XP, Linux, Win CE, XPe
System Monitoring &
Management - CPU temperature reading, CPU voltage monitoring - Wake-on-LAN, Keyboard-Power-on, Timer-Power-on, Watch
Dog Timer, FAN control
- System power management, AC power failure recovery
Operating Temperature - 0℃~ 50℃
Operating Humidity - 0% ~ 95% (relative humidity; non-condensing)
Form Factor - 6-layer PCB
- 17cm x 17.8cm
* The specification is subject to change without prior notice.

NAB-7400 Operating Guide
March 9, 2007 - 4 - Version 1.1
VIA NAB-7400 Processor SKUs
The VIA NAB-7400 is available with the following CPU options:
•1.0 GHz VIA C7 NanoBGA2 Processor

NAB-7400 Operating Guide
March 9, 2007 - 5 - Version 1.1
VIA C7 Processor Overview
The VIA CN700 is designed to enable high quality digital video streaming and DVD playback
in a new generation of fanless, small form factor PCs and IA devices. The VIA CN700
features the embedded VIA UniChrome™ Pro AGP MPEG-2 video decoding acceleration,
DDR2 400/533MHz support, motion compensation and dual-display support to ensure a rich
overall entertainment experience. The VIA VT8237R-Series provides outstanding
connectivity features including USB 2.0, Serial ATA, 10/100 LAN and UltraDMA 133/100/66.

NAB-7400 Operating Guide
March 9, 2007 - 6 - Version 1.1
VIA NAB-7400 I/O Back Panel Layout
The NAB-7400’s ultra compact 17cm x 17.8cm, integrated design supports all the standard
legacy x86 connectivity options as well as PS2 Mouse port, PS2 Keyboard port, COM port,
two USB 2.0 ports, and four RJ-45 LAN ports.

NAB-7400 Operating Guide
March 9, 2007 - 7 - Version 1.1
VIA NAB-7400 Board Dimensions

NAB-7400 Operating Guide
March 9, 2007 - 8 - Version 1.1
VIA NAB-7400 Height Distribution