CPU
Socket 478 for Intel Pentium 4 on-die 512/256KB L2 Cache with full speed
Chipset
Intel 82850E MCH
Intel 82801 BA ICH2
Front Side Bus
533 / 400 MHz
Memory
4 x 184-pin RIMM Sockets support max. 2GB* PC800 / PC1066 ECC * / non-ECC 16 bit RDRAM memory

Note:
Due to Intel 850E chipset's limitation, this board can:
Support Max. 64 memory devices for PC800 or 48 memory devices for PC1066 Dual-Channel mode.
Based on current 256Mb memory chip technology, the maximum total memory size is 2GB for PC800, 1.5GB for PC1066.
Both ECC and non-ECC RIMM are supported.
* 512Mb DRDRAM chip is not available now. Verification test is required before knowing its capability.
Expansion Slots
1 x AGP 4X (1.5V only)
5 x PCI
Storage
2 x UltraDMA 100 / 66 / 33
Audio (optional)
Realtek ALC650 6-channel CODEC
LAN (optional)
Intel 82562ET PHY
USB 2.0
NEC USB2.0 Controller
4 USB 2.0 Ports
Special Features
Power Loss Restart
ASUS JumperFree
Vcore adjustable
Support ASUS iPanel
Support S/PDIF out interface (on audio model only)
ASUS POST Reporter
ASUS EZ Plug
ASUS EZ Flash
AGP warning LED
Back Panel I/O Ports
1 x Parallel
2 x Serial
1 x PS/2 Keyboard
1 x PS/2 Mouse
1 x Audio I/O (optional)
1 x RJ45 (optional)
2 x USB 2.0 / 1.1
2 x USB 1.1
Internal I/O Connectors
1 x USB 2.0 / 1.1 connector support additional 2 USB 2.0 / 1.1 ports
1 x USB 1.1 connector support additional 2 USB 1.1 ports
CPU / Power / Chassis FAN connectors
20 pin ATX Power connector
4 pin ATX 12V Power connector
IDE LED connector, power LED connetor
Chassis Intrusion, SM Bus, SIR
S/PDIF out connector (optional)
ASUS iPanel connector
GAME/MIDI connector (optional)
CD / AUX / Modem audio in (optional)
Front Audio Panel connector (optional)
BIOS Feature
2Mb Flash ROM, AwardR BIOS, TCAV, PnP, DMI2.0, WfM2.0, SM BIOS 2.3,ASUSR EZ Flash
Industry Standard
PCI 2.2, USB 1.1, USB 2.0
Manageability
WfM 2.0,DMI 2.0,WOL by PME,WOR by PME, Chassis Intrusion, SM Bus
Support CD
Drivers
ASUS PC Probe
ASUS LiveUpdate Utility
Cyberlink PowerPlayer SE, VideoLive Mail
Trend Micro PC-cillin 2002 anti-virus software with Windows® XP support
Form Factor
ATX 12.0" x 9.6" (30.5cm x 24.5cm)