Description
Adaptec AHA-1540 SCSI-1 Host Adapter 16-Bit ISA PC/AT Controller Assy 411306-04
The Adaptec AHA-1540 is a 16-bit ISA SCSI-1 host adapter designed for IBM PC/AT and compatible systems. It connects internal SCSI devices — hard drives, tape drives, CD-ROM drives, and scanners — to the PC/AT bus, providing a dedicated SCSI channel that offloads device I/O from the system CPU. This example is Rev B, Assembly 411306-04, with FAB number 411307-00 Rev 2A.
Specifications & What's Included
- Model: Adaptec AHA-1540 (also known as AHA-1540B)
- Bus Interface: 16-bit ISA (AT Bus) — full-length card
- SCSI Standard: SCSI-1
- Assembly Number: 411306-04
- PCB Revision: Rev B
- FAB Number: 411307-00 Rev 2A
- Internal Connector: 50-pin internal SCSI header (visible on card)
- Logic ICs: Motorola and Texas Instruments SN74LS-series DIP logic, Motorola 8604A
- Country of Manufacture: Malaysia (per board markings)
- Card only — no SCSI cables included
Applications
The AHA-1540 series was Adaptec's flagship SCSI host adapter for the 16-bit ISA PC/AT platform during the mid-to-late 1980s, and became one of the most widely used SCSI controllers of its era. It was the standard choice for adding SCSI hard drives, tape backup units, and optical drives to IBM PC/AT and compatible desktop systems running MS-DOS, early versions of Windows, OS/2, and NetWare. The AHA-1540's design became so prevalent that many DOS-era software drivers and BIOS implementations included native AHA-1540 support, making it a go-to compatibility reference for SCSI on the AT bus. Today these cards are sought by vintage PC enthusiasts and collectors restoring period-correct 286, 386, and early 486 systems, as well as by administrators maintaining legacy hardware in specialized industrial or scientific environments where older SCSI-dependent software still runs.
This Adaptec AHA-1540 16-Bit ISA SCSI Host Adapter has been inspected and appears to be in good used condition. The board (Rev B, Assy 411306-04) is clean with no visible damage, burnt components, or broken traces. It was pulled from a working PC/AT environment where it was previously in service. Normal light handling wear may be present, consistent with a card that was installed and removed from a system. Please view our photo set and contact us if you have any questions.
Warranty Information
Additional Information
Brand: |
Adaptec |
Model: |
AHA-1540 |
MPN: |
411306-04 |
Secondary Model: |
AHA-1540B |
Type: |
SCSI Host Adapter / Controller Card |
SKU: |
42146 |
Bus Interface: |
16-Bit ISA (AT Bus) |
SCSI Standard: |
SCSI-1 |
Form Factor: |
Full-Length 16-Bit ISA Card |
Assembly Number: |
411306-04 |
PCB Revision: |
Rev B |
FAB Number: |
411307-00 Rev 2A |
Internal Connector: |
50-Pin Internal SCSI Header |
Compatible With: |
IBM PC/AT and compatible 16-bit ISA systems |
Controller Chipset: |
Motorola and TI SN74LS-series logic ICs |
Country/Region of Manufacture: |
Malaysia |
Seller Notes: |
Card only — no cables included. Rev B, Assy 411306-04. |
Condition Notes: |
This Adaptec AHA-1540 16-Bit ISA SCSI Host Adapter (Rev B, Assy 411306-04) is in good used condition. Board is clean with no visible damage. Pulled from a working PC/AT environment. |
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 |
