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. |
California Prop 65 Warning: |
WARNING: This product can expose you to chemicals including lead and lead compounds, and DEHP (a phthalate), which are known to the State of California to cause cancer and birth defects or other reproductive harm. Go to P65Warnings.ca.gov |