Description
IBM 12J5991 12J5990 API-6056 90W Desktop Computer Power Supply 100-127V
90-watt power supply unit for IBM desktop computers. Supplies regulated DC power to system components via ATX and peripheral connectors.
Specifications & What's Included
- Model: 12J5991 / 12J5990 (API-6056)
- Output: 90W
- Input: 100-127V AC, 50/60Hz
- Revision: Rev D (Engineering Change E71692)
- Connectors: 20-pin ATX main, 4-pin Molex peripheral, floppy power
- Power supply unit only; no cables or accessories included
Applications
This supply was used in IBM desktop PCs from the 1990s-2000s era. The 90W output and ATX form factor suit older business and consumer IBM systems. Harness and connectors remain intact for connection to compatible IBM mainboard and component architectures.
Condition: Used
IBM 12J5991 90W Desktop Computer Power Supply (P/N 12J5990 / API-6056) in excellent working condition. This unit has been bench tested and verified to operate properly. The power supply exhibits light cosmetic wear typical of previous service use, with no structural damage. All output connectors are intact and undamaged, including the 20-pin ATX main connector, 4-pin Molex peripheral connectors, and floppy power lead. The rear-mounted cooling fan and IEC AC input connector are present and fully functional. Please review the detailed photos and contact us with any questions. Please note: We have multiple units in stock — yours may not be the one shown in the photos, however, it will be similar in condition and function.
IBM 12J5991 90W Desktop Computer Power Supply (P/N 12J5990 / API-6056) in excellent working condition. This unit has been bench tested and verified to operate properly. The power supply exhibits light cosmetic wear typical of previous service use, with no structural damage. All output connectors are intact and undamaged, including the 20-pin ATX main connector, 4-pin Molex peripheral connectors, and floppy power lead. The rear-mounted cooling fan and IEC AC input connector are present and fully functional. Please review the detailed photos and contact us with any questions. Please note: We have multiple units in stock — yours may not be the one shown in the photos, however, it will be similar in condition and function.
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: |
12J5991 |
Secondary Model: |
API-6056 |
MPN: |
12J5990 |
FRU Number: |
12J5991 |
SKU: |
12862 |
Condition: |
Used – Inspected |
Seller Notes: |
Power supply only; no additional accessories included. |
Form Factor: |
Desktop |
Power Output: |
90 Watts |
Input Voltage: |
100-127V AC, 50/60Hz |
Revision: |
Rev D |
Engineering Change: |
E71692 |
Compatible With: |
IBM Desktop PCs requiring 12J5991 / 12J5990 power supply |
Country of Manufacture: |
Unknown |
Connector Type: |
20-pin ATX main, 4-pin Molex peripheral, floppy power |
Condition Notes: |
IBM 12J5991 90W Desktop Computer Power Supply (P/N 12J5990 / API-6056) in excellent working condition. This unit has been bench tested and verified to operate properly. |
