CPU LGA775 socket for Intel Pentium 4/Celeron CPU
Compatible with Intel 04B and 04A processors
Intel Hyper-Threading Technology ready
Support Intel EM64T and EIST technology
Chipset Intel 915PL
Intel ICH6
Front Side Bus 800 / 533 MHz
 Memory Dual channel memory architecture
2 x 184-pin DIMM Sockets support max. 2GB DDR 400/333 non-ECC memory
ASUS Hyper Path2
(Note: Due to chipset limitation, this motherboard supports a maximum of 2GB total memory)
Expansion Slots 1 x PCI Express x16 slot 
1 x PCI Express x1 
3 x PCI
Storage/RAID Intel ICH6 South Bridge:
1 x UltraDMA 100/66/33 
4 x Serial ATA
LAN

Intel 82540EM Gigabit LAN Controller
Audio

ADI 1986A High Definition Audio 6-channel CODEC S/PDIF out on back I/O port
USB

Max. 8 USB 2.0 ports
Overclocking Features

AI Overclocking (intelligent CPU frequency tuner)
ASUS CPU Lock Free Technology
ASUS Hyper Path2
SFS (Stepless Frequency Selection) from 100MHz up to 400MHz at 1MHz increment
Adjustable FSB/DDR ratio. Fixed PCI/PCI-E frequencies.
ASUS C.P.R.(CPU Parameter Recall)

Other ASUS Special Features

CrashFree BIOS 2
ASUS EZ Flash
MyLogo 
Q-Fan
Back Panel I/O

1 x Parallel
1 x Serial
1 x S/PDIF Output
1 x PS/2 Keyboard
1 x PS/2 Mouse
1 x 6-Channel Audio I/O
1 x RJ45
4 x USB 2.0/1.1
Internal I/O Connectors

2 x USB 2.0 connector supports additional 4 USB ports
CPU / Chassis Fan connectors
4 x SATA connector
1 x IDE connector
Chassis Intrusion
CD audio in
24-pin EATX Power connector
1 x S/PDIF out connector
Front panel audio connector
4-pin ATX 12V Power connector
Game/MIDI connector
System panel connector
BIOS

4 Mb Flash ROM,AMI BIOS, PnP, DMI2.0, WfM2.0, SM BIOS 2.3
 Accessories

User's manual
1 x Serial ATA cable
1 x SATA power cable 
1 x UltraDMA 100/66 cable
1 x FDD cable
1 x I/O shield
 Support CD

Drivers
ASUS PC Probe
ASUS LiveUpdate Utility
Anti-virus software (OEM version)
Form Factor

 ATX Form Factor, 12"x 7.2"(30.5cm x 18.3cm)