Description
Compaq 136521-001 386 SX System Board Motherboard VGA PS/2 Serial DB25 ISA
This is a system board (motherboard) for Compaq 386 SX series computers, featuring an Intel 80386SX processor socket and integrated VGA video. The board supports ISA expansion cards and includes multiple I/O ports for peripherals.
Specifications & What's Included
- Processor: Intel 80386SX socket
- Chipset: Compaq 136522-001 custom ASIC
- Video: Integrated VGA
- Ports: VGA, PS/2, DB9 Serial, DB25 Parallel
- Bus: ISA (Industry Standard Architecture)
- Form Factor: Full-length ISA card / proprietary
- Board only — no CPU, RAM, or accessories included
Applications
This board was used in Compaq 386 SX series desktop and portable systems from the late 1980s and early 1990s. The 80386SX processor was a 16-bit variant of the 386 architecture, commonly deployed in business, industrial, and office computing environments. The ISA bus supported standard peripherals, network cards, and I/O adapters typical of that era.
Condition: Used
This Compaq 136521-001 386 SX System Board Motherboard has been inspected and appears to be in good used condition. The board shows normal age-related wear consistent with a vintage ISA-era system board — light oxidation and general use patina on the PCB surface, but no visible cracks, broken traces, burnt components, or damaged connectors. The rear-bracket ports (PS/2, DB25, DB9 serial, and VGA) all appear intact. This board was not bench-tested at our facility, but it was pulled from a working Compaq environment. Please view our photo set and contact us if you have any questions.
This Compaq 136521-001 386 SX System Board Motherboard has been inspected and appears to be in good used condition. The board shows normal age-related wear consistent with a vintage ISA-era system board — light oxidation and general use patina on the PCB surface, but no visible cracks, broken traces, burnt components, or damaged connectors. The rear-bracket ports (PS/2, DB25, DB9 serial, and VGA) all appear intact. This board was not bench-tested at our facility, but it was pulled from a working Compaq environment. Please view our photo set and contact us if you have any questions.
Warranty Information
We stand behind every item we sell with a 30-day money-back guarantee. If your item arrives not as described, you may return it within 30 days for a full refund. Please inspect your purchase upon arrival and contact us with any questions.
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Additional Information
Brand: |
Compaq |
Model: |
136521-001 |
MPN: |
136521-001 |
Secondary Model: |
136522-001 |
Type: |
System Board / Motherboard |
SKU: |
15020 |
Condition: |
Used – Pulled from Working Environment |
Processor Socket / CPU: |
Intel 80386SX |
Form Factor: |
Full-Length ISA Card / Proprietary |
Bus Type: |
ISA (Industry Standard Architecture) |
Integrated Video: |
VGA |
Ports: |
PS/2, DB25 Parallel, DB9 Serial, VGA |
Expansion Slots: |
ISA |
Chipset: |
Compaq 136522-001 (custom Compaq ASIC) |
Compatible With: |
Compaq 386 SX series desktop/portable systems |
Country/Region of Manufacture: |
United States |
Seller Notes: |
Board only; no CPU, RAM, or accessories included. |
Condition Notes: |
Compaq 136521-001 386 SX System Board in good used condition. Normal age wear; ports and connectors intact. Not bench-tested at our facility; pulled from a working Compaq environment. Board only — no CPU, RAM, or accessories. |
