This document provides information about the hardware design, Award BIOS settings, and onboard technical information of the P55-ET ISA PCI motherboard.
The P55-ET motherboard is a high‑performance ISA/PCI board based on Intel Pentium processors. It features four PCI slots, four standard ISA slots, a Super Multi‑I/O controller, dual PCI‑IDE connectors, and a four‑layer design measuring 220 mm × 280 mm.
The manual covers board layout, connector and jumper descriptions, BIOS configuration (Award Plug‑and‑Play BIOS stored in Flash EPROM), memory and cache options, and detailed pin‑out tables for I/O ports such as floppy, serial, parallel, and PS/2 mouse connectors.
| Supported CPU | Intel Pentium processors (P54C/P54CST, up to 166 MHz) |
|---|---|
| Maximum System Memory | 128 MB DRAM (minimum 8 MB) |
| Memory Types | Fast Page DRAM or EDO DRAM SIMM (72‑pin, 4 slots) |
| PCI Slots | Four 32‑bit PCI slots |
| ISA Slots | Four 16‑bit ISA slots |
| IDE Interfaces | Two onboard PCI‑IDE connectors supporting PIO Mode 3/4 |
| BIOS Type | Award Plug‑and‑Play BIOS stored in Flash EPROM |
| Cache Options | 256 KB or 512 KB L2 cache (SRAM) |
| I/O Ports | 1 floppy, 1 parallel (EPP/ECP), 2 serial (16550 UART), PS/2 mouse and keyboard |
It provides four 32‑bit PCI slots.
The board supports up to 128 MB of DRAM.
It uses an Award Plug‑and‑Play BIOS stored in Flash EPROM.