Description
Adaptec AHA-1535A ISA SCSI Controller Card 50-Pin Internal 25-Pin External
The Adaptec AHA-1535A is an ISA-bus SCSI-2 host adapter that connects SCSI storage devices — hard drives, CD-ROM drives, scanners, tape drives, and similar peripherals — to ISA-slot personal computers. It provides one 50-pin internal SCSI header and one 25-pin external DB25 connector, allowing both internal and external SCSI devices to be attached. The main controller chip is Adaptec's own AHA-1535A ASIC (date code 9710, revision 947000 C), visible on the board under the label.
Specifications & What's Included
- Manufacturer: Adaptec
- Model: AHA-1535A
- Chip: Adaptec AHA-1535A ASIC, revision 947000 C, date code 9710
- Bus interface: ISA (Industry Standard Architecture), full-height card
- SCSI standard: SCSI-2
- Internal connector: 50-pin IDC header
- External connector: 25-pin DB25 (bracket-mounted)
- Form factor: ISA full-height expansion card
- Card only — no cables or accessories included
Applications
ISA SCSI host adapters like the AHA-1535A were a staple of mid-1990s PC expansion, bridging ISA-bus systems to the broad ecosystem of SCSI-2 peripherals that dominated professional and prosumer storage at the time. They were commonly installed in desktop PCs and workstations running MS-DOS, Windows 3.x, Windows 95/98, and Windows NT to support SCSI hard drives, CD-ROM and CD-R drives, flatbed scanners, tape backup units, and removable media drives (such as Iomega Jaz and Syquest cartridge drives). Today the AHA-1535A is sought by collectors and technicians maintaining legacy DOS/Windows 9x machines, vintage workstations, and retro computing systems that require a proven ISA SCSI adapter. Adaptec was one of the most widely supported SCSI controller brands of the era, with driver support across virtually every major OS of the period.
This Adaptec AHA-1535A ISA SCSI Controller Card has been inspected and is in good used condition. The PCB is clean with no visible damage, broken traces, or missing components. The bracket and card-edge connector both look good. Normal light handling wear is present. Please view our photo set and contact us if you have any questions.
Warranty Information
Additional Information
Brand: |
Adaptec |
Model: |
AHA-1535A |
MPN: |
AHA-1535A |
Secondary Model: |
947000 C |
SKU: |
34146 |
Type: |
SCSI Controller Card |
Bus Interface: |
ISA |
SCSI Standard: |
SCSI-2 |
Internal Connector: |
50-Pin IDC Header |
External Connector: |
25-Pin DB25 |
Form Factor: |
ISA Full-Height Card |
Compatible With: |
ISA-bus PCs, DOS/Windows 3.x/9x/NT systems |
Country/Region of Manufacture: |
United States |
Condition Notes: |
This Adaptec AHA-1535A ISA SCSI Controller Card has been inspected and is in good used condition. PCB is clean with no visible damage. Normal light wear present. |
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 |