IBM

IBM 85F0434 System Board Motherboard 90X9152-01 PS/2 ISA 1987 For Parts

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SKU:
41975
MPN:
85F0434
Condition:
Used
Availability:
Usually ships within 1–2 business days.
Weight:
5.00 LBS
Shipping:
Calculated at Checkout
  • IBM 85F0434 system board top view showing full PCB layout with ISA expansion slots and ICs
  • IBM 85F0434 motherboard bottom/solder side view showing PCB trace routing
  • Close-up of IBM 85F0434 motherboard showing cracked chip area with orange marking circles highlighting damage
  • IBM FRU-85F0434 label on motherboard PCB showing barcode and part number
  • IBM Corp 1987 copyright and part number 90X9152-01 silkscreen printed on PCB edge
  • IBM 85F0434 motherboard I/O bracket side view showing two PS/2 ports, two DB-25 connectors, and DB-15 connector
  • Close-up of I/O bracket showing dual PS/2 Mini-DIN ports
  • Close-up of I/O bracket showing DB-25 parallel connector port
  • Close-up of I/O bracket showing gold-pin DB-25 connector
  • Close-up of I/O bracket showing DB-15 connector port detail
$55.00
Was: $100.00
Current Stock: 1

Sold Out

Description

IBM 85F0434 System Board Motherboard 90X9152-01 PS/2 ISA 1987 For Parts

This is a full-size AT-form factor system board from IBM, manufactured in 1987. It served as the main circuit board in IBM PS/2 compatible desktop systems of that era.

Specifications & What's Included

  • Model: IBM 85F0434 / 90X9152-01
  • Form Factor: Full-Size Desktop AT
  • Bus Type: ISA with multiple expansion slots
  • Rear I/O: 2x PS/2 Mini-DIN, 2x DB-25 parallel, 1x DB-15 video
  • Board Dimensions: 17 x 12 inches (approx.)
  • Key ICs: TI-106XF, SS512AE, MP106T 74F240

Applications

System boards of this type were used as the foundation for desktop computing in the late 1980s. This board is compatible with IBM PS/2 systems and AT-era machines. It housed the processor, memory, and I/O controller logic, connecting peripherals such as keyboards, mice, printers, and monitors. These boards are sought by vintage computer collectors and restorers working with period-correct systems.

Condition: For Parts or Not Working
This IBM 85F0434 System Board (90X9152-01) has a cracked chip and is being sold as-is for parts or repair only. The damage is visible in our photos — orange markers in the close-up shots highlight the affected area. We are unable to test the board in this condition and make no claims about its functionality. The rest of the board appears physically intact with no other obvious damage observed. Sold as-is with no returns based on functionality. Please view our photo set and contact us if you have any questions.
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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:
IBM
Model:
85F0434
MPN:
85F0434
Secondary Model:
90X9152-01
Type:
System Board / Motherboard
SKU:
41975
Condition:
As-Is / For Parts or Not Working
Seller Notes:
Sold as-is for parts or repair. Has a cracked chip. Board cannot be tested.
Country/Region of Manufacture:
United States
Form Factor:
Full-Size Desktop / AT
Bus Type:
ISA
Copyright / Board Date:
1987 (IBM Corp 1987 silkscreen)
Rear I/O Connectors:
2x PS/2 Mini-DIN, 2x DB-25 (parallel), 1x DB-15 (video/other)
Expansion Slots:
Multiple ISA slots (visible on board)
Compatible With:
IBM PS/2 or compatible AT-era desktop system
Chipset / ICs:
TI-106XF 00X8872; SS512AE 031A550AMV; MP106T 74F240
Board Dimensions:
17 x 12 inches (approx.)
Condition Notes:
IBM 85F0434 motherboard (90X9152-01) sold as-is for parts or repair. Has a cracked chip — see photos. Board cannot be tested. No functionality guarantee. Please contact us with questions.
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
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