ASUS P/I-P55T2P4 Rev. 3.10

Technical details
Name:	P/I-P55T2P4
Company:	ASUS
Chipset:	Intel 430HX Triton II, 82439HX, 82371SB (PIIX3), Winbond Super I/O
CPU socket:	ZIF-Socket 7
Memory:	2 banks a 2x PS/2 SIMM sockets, max. 512 MB
Bus:	4x PCI, 3x ISA 16 bit, 1x ASUS MediaBus Rev 2.0
Connectors:	AT power, Keyboard, front-module pins, 2x EIDE on PCI, floppy, 2x serial, parallel, PS/2 mouse, 2x USB
Form factor:	Baby-AT
Manufactured:	1996

This board was quite popular Supported CPUs are P54C, P55C, 6x86, 6x86L, 6x86MX, K5, K6 with 50/55/60/66/75 MHz FSB. Multipliers are 1.5x - 3.5x. Voltages are 3.4 V - 3.5 V in single Voltage mode and 2.5 V - 3.2 V core in dual Voltage mode. The board has 512 kB pipelined burst cache and supports FPM and EDO up to 512 MB. The cacheable area is 512 MB with the additional Tag-RAM plugged (DIL socket above CPU socket). The BIOS is from Award and a Dallas type RTC is used to buffer the CMOS. ASUS tried to establish an own proprietary bus extension called MediaBus, however these efforts were not successfull. With the "Audio Bundle" ASUS delivered the ASUS-A16C card that has to be used in the MediaBus slot.

Nowadays small disadvantages are the soldered Dallas RTC chip which has to be replaced after ~30 years and only 4 memory slots.

Mainboard Manual

Mainboard BIOS