ASUS P2-BX Slot 1 Pentium III Motherboard ATX BX Chipset AGP 4 PCI 3 ISA

ASUS P2-BX Slot 1 Pentium III Motherboard ATX BX Chipset AGP 4 PCI 3 ISA

The ASUS P2-BX is an ATX form factor motherboard built around the Intel 440BX chipset, designed to accept Slot 1 Pentium II and Pentium III processors. It features one AGP slot for a dedicated graphics card, four PCI expansion slots, three ISA slots for legacy cards, and four SDRAM DIMM sockets. Onboard I/O includes dual PS/2 ports, two USB ports, one parallel port, and two serial ports. An Award BIOS chip is fitted, and the board carries the Intel 440BX northbridge and southbridge chipset pair as confirmed by the IC markings visible in the photos.

Specifications & What's Included

• Model: ASUS P2-BX
• Form Factor: ATX
• CPU Socket: Slot 1 (Intel Pentium II / Pentium III)
• Chipset: Intel 440BX (northbridge + southbridge visible in photos)
• BIOS: Award BIOS (chip label visible in photos)
• Memory Slots: 4x DIMM (SDRAM)
• AGP Slot: 1x AGP
• PCI Slots: 4x PCI
• ISA Slots: 3x ISA
• Rear I/O: 2x PS/2 (keyboard + mouse), 2x USB, 1x 25-pin parallel, 2x 9-pin serial (DB9)
• Storage Connectors: 2x IDE headers, 1x floppy header
• Power Connector: ATX 20-pin
• Included: Motherboard only

Applications

The ASUS P2-BX was produced in the late 1990s during the era when Intel's Slot 1 packaging replaced Socket 7, introducing the Pentium II and early Pentium III processors as the platform for mainstream desktop and workstation builds. The Intel 440BX chipset was widely regarded as one of the most stable and capable chipsets of its generation, supporting 100 MHz front-side bus speeds and making it a popular choice for both consumer desktops and entry-level workstations of the period. Three ISA slots made boards like this a practical transitional platform, allowing users to carry over legacy sound cards, internal modems, and I/O cards during the industry's gradual move toward all-PCI systems. Today these boards are sought after for retro PC building, legacy industrial or scientific workstation support where period-correct hardware is required, and period software testing and emulation environments that require authentic 1990s-era x86 hardware.