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Adaptec AHA-2840A/42A Adaptec Vlb SCSI Controller, Aha-2840A/42A, 567303-00 A,581307-00,Aha-2842A, 5...
- VESA Local Bus (VLB) interface for high-speed connectivity
- Supports SCSI (Small Computer System Interface) devices
- Provides direct connection for hard drives, CD-ROM drives, and other SCSI peripherals
- Includes necessary connectors for SCSI devices
- Designed for compatibility with VLB-based motherboards
- Offers enhanced data transfer rates compared to older ISA-based controllers
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Product Overview
The Adaptec AHA-2840A/42A is a VLB SCSI Controller, designed to provide high-speed data transfer for SCSI devices. It offers a reliable interface for connecting storage peripherals in systems utilizing the VLB (VESA Local Bus) architecture. This controller is crucial for systems requiring direct SCSI connectivity.
Technical Information
| Interface | VESA Local Bus (VLB) |
| Device Type | SCSI Controller |
| SCSI Standard | Not Specified (Likely SCSI-2 or similar) |
| Number of Devices Supported | Not Specified |
Additional Specifications
| Connectors | Internal and External SCSI connectors (e.g., 50-pin Centronics, 50-pin IDC) |
| Data Transfer Rate | Not Specified (Dependent on VLB speed and SCSI standard) |
| Operating System Support | Not Specified (Typically DOS, Windows 3.1/95) |
Product Description
The Adaptec AHA-2840A/42A represents a significant advancement in peripheral connectivity for systems equipped with the VESA Local Bus (VLB) architecture. As a SCSI controller, its primary function is to interface with and manage a variety of SCSI devices, including hard drives, optical drives, and scanners. The VLB interface was known for its ability to provide much higher bandwidth than the older ISA bus, allowing the SCSI controller to operate closer to its theoretical maximum transfer speeds, thereby improving overall system performance for storage-intensive tasks. This controller is particularly valuable for users who need to integrate legacy SCSI hardware into their VLB-based systems. It provides the necessary physical connectors and the logical interface to communicate with these devices. The specific model numbers mentioned (AHA-2840A/42A) suggest potential variations or revisions of the same core controller, possibly differing in included features or specific chipset revisions. The inclusion of part numbers like 567303-00 A and 581307-00 further indicates specific manufacturing or revision identifiers. In an era where IDE interfaces were becoming more common, SCSI offered distinct advantages in terms of performance, device count, and cable length, making it the preferred choice for professional workstations and servers. The Adaptec AHA-2840A/42A was a key component in enabling these capabilities on VLB platforms, facilitating efficient data management and access for demanding applications of its time.
