Description

Vintage AC486 (PGA) Rev. 1.0 AT motherboard with an installed Intel i486SX processor, ACC Micro chipset and original AMI BIOS.

This is a very clean early-1990s 486-era motherboard suitable for vintage PC restoration, DOS-era builds, replacement use or collecting.

Identification & Features:

* Board: AC486 (PGA) Rev. 1.0

* Intel i486SX processor installed

* ACC Micro 2168 chipset

* AMI 486DX ISA BIOS

* BIOS ROM ID: AA0225529

* AMI copyright marking: 1986–1992

* Six 16-bit ISA expansion slots

* Eight 30-pin SIMM memory sockets

* AT-style motherboard

* Board ID/barcode: 236A53B21507

* Original TEST OK / Warranty Void If Removed QC sticker remains present

* Front-panel connections marked Turbo LED, Turbo Switch, Reset, Speaker and Keylock

PLEASE NOTE: The AMI ROM is labeled “486DX ISA BIOS.” This identifies the BIOS; it does not mean a 486DX processor is installed. The processor physically installed on this motherboard is an Intel i486SX.

Condition Details

The motherboard is exceptionally clean for its age and appears complete based on the photos.

It has not been personally tested, so no representation is being made regarding POST, BIOS operation, memory functionality, expansion slots or other electronic functions.

It came from a reliable source and is believed to have been operational when previously in service.

No RAM, cables, documentation or additional accessories are included.