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
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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.

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VIA NAB-7400 Layout

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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.

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VIA NAB-7400 Processor SKUs
The VIA NAB-7400 is available with the following CPU options:
•1.0 GHz VIA C7 NanoBGA2 Processor

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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.

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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.

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VIA NAB-7400 Board Dimensions

NAB-7400 Operating Guide
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VIA NAB-7400 Height Distribution

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Power Consumption
Power consumption tests were carried out comparing the VIA NAB-7400 running with VIA
C7 1.0 GHz NanoBGA2 processor. The following tables are a comprehensive breakdown of
the NAB-7400 platform’s voltage, amp and wattage values while running common system
applications.
VIA NAB-7400 (MAX)
A. Playing DVD – Power DVD 5.0
Measured Voltage Measured Amp. Watts
Main Board +3.3V 3.238 1.358 4.397
Main Board +5V 5.082 2.101 10.677
Main Board 5VSB 4.955 0.190 0.941
Main Board +12V 12.062 0.079 0.953
Main Board Power Consumption 16.969
B. Playing MP3 – Function Not Supported
Measured Voltage Measured Amp. Watts
Main Board +3.3V 0.000
Main Board +5V 0.000
Main Board 5VSB 0.000
Main Board +12V 0.000
Main Board Power Consumption 0.000
C. Data Download from Network
Measured Voltage Measured Amp. Watts
Main Board +3.3V 3.232 1.351 4.366
Main Board +5V 5.056 1.985 10.036
Main Board 5VSB 4.964 0.197 0.978
Main Board +12V 12.059 0.078 0.941
Main Board Power Consumption 16.321
D. Idle
Measured Voltage Measured Amp. Watts
Main Board +3.3V 3.251 1.401 4.555
Main Board +5V 5.063 1.120 5.671
Main Board 5VSB 4.964 0.190 0.943
Main Board +12V 12.056 0.081 0.977
Main Board Power Consumption 12.145

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E. Run C.C. Winstone 2001
Measured Voltage Measured Amp. Watts
Main Board +3.3V 3.234 1.422 4.599
Main Board +5V 5.056 2.100 10.618
Main Board 5VSB 4.961 0.190 0.943
Main Board +12V 12.059 0.083 1.001
Main Board Power Consumption 17.160
F. S3 Mode – Function Not Supported
Measured Voltage Measured Amp. Watts
Main Board +3.3V 0.000
Main Board +5V 0.000
Main Board 5VSB 0.000
Main Board +12V 0.000
Main Board Power Consumption 0.000

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VIA NAB-7400 (MEAN)
A. Playing DVD – Power DVD 5.0
Measured Voltage Measured Amp. Watts
Main Board +3.3V 3.247 1.324 4.299
Main Board +5V 5.029 1.569 7.891
Main Board 5VSB 4.948 0.186 0.920
Main Board +12V 12.033 0.067 0.806
Main Board Power Consumption 13.916
B. Playing MP3 – Function Not Supported
Measured Voltage Measured Amp. Watts
Main Board +3.3V 0.000
Main Board +5V 0.000
Main Board 5VSB 0.000
Main Board +12V 0.000
Main Board Power Consumption 0.000
C. Data Download from Network
Measured Voltage Measured Amp. Watts
Main Board +3.3V 3.224 1.317 4.246
Main Board +5V 5.029 1.618 8.137
Main Board 5VSB 4.956 0.150 0.743
Main Board +12V 12.047 0.066 0.795
Main Board Power Consumption 13.921
D. Idle
Measured Voltage Measured Amp. Watts
Main Board +3.3V 3.247 1.325 4.302
Main Board +5V 5.058 1.027 5.195
Main Board 5VSB 4.961 0.187 0.928
Main Board +12V 12.040 0.069 0.831
Main Board Power Consumption 11.255
E. Run C.C. Winstone 2001
Measured Voltage Measured Amp. Watts
Main Board +3.3V 3.222 1.311 4.224
Main Board +5V 5.020 1.776 8.916
Main Board 5VSB 4.950 0.186 0.921
Main Board +12V 12.050 0.066 0.795
Main Board Power Consumption 14.856

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F. S3 Mode – Funvtion Not Supported
Measured Voltage Measured Amp. Watts
Main Board +3.3V 0.000
Main Board +5V 0.000
Main Board 5VSB 0.000
Main Board +12V 0.000
Main Board Power Consumption 0.000

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Power Specifications
The NAB-7400 utilizes an industry standard 20-pin ATX main connector to the power supply.
Due to the NAB-7400 platform’s ultra low power requirements a 90 – 120 Watt ATX power
supply is ample for even the heaviest of multimedia system applications.
1 +3V 11 +3V
2 +3V 12 -12V
3 Gnd 13 Gnd
4 +5V 14 PWR_ON-
5 Gnd 15 Gnd
6 +5V 16 Gnd
7 Gnd 17 Gnd
8 PWR_GD 18 NC
9 5V_SB 19 +5V
10 +12V 20 +5V
Note: NC = no connection
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VIA NAB-7400 Microsoft and Linux Driver Support
Microsoft Driver Support
VIA NAB-7400 offers full support for the complete range of Microsoft operating systems.
For standard operating systems, Windows 2000/XP latest drivers downloads can be found in
the VEPD website at www.viaembedded.com.
For embedded operating systems, Windows CE.NET and XP Embedded related driver
supports can be found in the VIA Arena website at www.viaarena.com.
Linux Driver Support
VIA NAB-7400 mainboards have a very high degree of support under Linux.
Support and drivers are provided through various methods including:
•Drivers provided by VIA
– Using a driver built into a distribution package
– Visiting VIA Arena website at www.viaarena.com for latest updates on a monthly
basis
•Installing a third party driver (such as the ALSA driver from the Advanced Linux
Sound Architecture project for integrated audio)
For OEM clients and system integrators developing a product for long term production, other
code and resources may also be made available. You can submit a request either through
the Developers portal on VIA Arena, or through your VEPD support contact. Alternatively,
VIA can work further towards providing additional drivers to suite your specific needs.

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Contact
For more information on the VIA NAB-7400 Mainboard contact your sales representative or
visit our website at www.viaembedded.com
USA
440 Mission Court, Suite 220
Fremont, CA 94539
Tel: [phone]
Fax: [phone]
Email: [email protected]
Germany
Mottmann Strasse 12
53842 Troisdorf-Oberlar
Tel: [phone]
Fax: [phone]
Email: [e-mail]
Taiwan
1F, No. 531, Chung Cheng Road
Hsin Tien, Taipei 231
Tel: [phone]
Fax: [phone]
Email: [email protected]
China
6F, DAscom Tower
9 Shangdi East Road
Haidian District
Beijing, 100085
Tel: [phone]
Fax: [phone]
Email: [email protected]