Micronics M54Pi Socket 5 Motherboard 09-00208 Intel Pentium ATX ISA PCI

Micronics M54Pi Socket 5 Motherboard 09-00208 Intel Pentium ATX ISA PCI

The Micronics M54Pi is a Socket 5 motherboard designed for Intel Pentium processors, manufactured by Micronics Computers Inc. It features a mix of PCI and ISA expansion slots along with SIMM memory sockets, making it a representative example of mid-1990s PC platform design. Part number 09-00208 is silkscreened on the board edge. The board uses an AT form factor with a standard DIN-5 AT keyboard connector on the I/O panel.

Specifications & What's Included

• Manufacturer: Micronics Computers Inc.
• Model: M54Pi
• Part Number: 09-00208
• CPU Socket: Socket 5 (Intel Pentium P54C series)
• Form Factor: AT
• Expansion Slots: Multiple PCI slots and ISA slots (visible on board)
• Memory: 4 x SIMM sockets
• I/O Controller: SMC Super I/O chip (visible on board)
• Keyboard Connector: DIN-5 (AT-style, visible on I/O panel)
• Intel chipset visible on board (full part number not fully legible in photos)
• Heatsink present on chipset area
• Board only — no CPU, memory, or accessories included

Applications

The Micronics M54Pi is a mid-1990s Socket 5 Pentium motherboard from the era when Intel's P54C Pentium processors — ranging from 75 MHz to 200 MHz — were the mainstream desktop platform. Micronics Computers Inc. was a well-regarded board maker during this period, producing boards used in business workstations and system integrator builds. The M54Pi's combination of PCI and ISA slots was standard for this generation, allowing users to mix newer PCI peripherals (graphics, SCSI) with legacy ISA cards (sound, serial I/O). Today, boards like this are sought by vintage PC enthusiasts, retro computing hobbyists, and those maintaining or restoring legacy systems that require period-correct hardware. They also see use in DOS and early Windows 95/98 gaming rigs, where the Pentium Socket 5 platform is specifically targeted for compatibility with software and games from that era.