The Adaptec AHA-2940W PCI-to-Fast SCSI host adapter provides a powerful multi-tasking interface between your computer's PCI bus and SCSI devices (disk drives, CD-ROM drives,scanners, tape backups, removable media drives, etc.).
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DownloadsDocumentationTechnical Specifications

Note: Only drivers that are not included or embedded within a supported operating system are listed below. To see a complete list of supported operating systems see the Product Specifications

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Bios Updates and Other Downloadable Files

Bios Updates and Other Downloads




Microsoft DOS
Microsoft Windows 2000
Microsoft Windows 3.1x
Microsoft Windows 7
Microsoft Windows 95
Microsoft Windows 98
Microsoft Windows Millennium
Microsoft Windows NT
Microsoft Windows Server 2008
Microsoft Windows Vista

Novell NetWare

Novell NetWare Downloads


SCO Unix
SCO UnixWare

Hardware Installation
how to install your adaptec pci card (html 74 kb)
connecting wide and narrow (html 73 kb)
Installing Drivers or Software
cd install netware 401 (html 69 kb)
7800 netware instructions (html 81 kb)
7800 family manager set 98 contents (html 68 kb)
installing 98 driver (html 70 kb)
windows 98 issues (html 70 kb)
7800 miniport issues in 95 (html 70 kb)
installing windows nt driver (html 82 kb)
7800 supported adapters (html 72 kb)
aic7870.dsk options (html 76 kb)
7800 netware contents (html 70 kb)
7800 issues for netware (html 71 kb)
7800 netware notes (html 70 kb)
miniport options (html 70 kb)
2940 winnt 3.x (html 70 kb)
os/2 driver installation (html 68 kb)
unix driver disk conversion (html 69 kb)
loading adaptec dsk drivers (html 71 kb)
netware 3.12 cd install (html 68 kb)
7800 unix driver instructions (html 75 kb)
os/2 driver notes (html 77 kb)
7800 os/2 diskette (html 69 kb)
sco unix driver installation (html 75 kb)
7800 fms support list (html 72 kb)
Product Documentation
Install Guide for the AHA-2940/2940W (PDF 173 KB)
Use Your Product
scsi<i>select</i> user's guide (html 83 kb)
scsi terms explained (html 77 kb)
sense codes described (html 96 kb)
Number of devices
Supports up to 15 devices total

Bus System Interface Type

32-bit PCI local-bus
External Connectors
68-pin SCSI-3 connector
Internal Connectors
50-pin shrouded standard SCSI header68-pin shrouded SCSI-3 header
Data Transfer Rate
20 Mbytes/sec
Package Contents
AHA-2940W Host AdapterAdaptec EZ-SCSI v3.01 for DOS/WindowsASW-7800 v1.0250 pin internal SCSI ribbon cable68 pin internal wide SCSI ribbon cableDocumentation
5 years

Supported Protocols

SCSI-2 and SCSI-3

Advanced SCSI Features

Advanced SCSI Programming Interface (ASPI) compliant,
Multi-Threaded I/O,
Tagged Queuing,
Synchronous and Asynchronous Fast and Wide

Hard Disk Capacity

Extended translation scheme supports up to eight (8) Gbytes per disk


Single-ended, active, programmable via SCSI Select configuration utility

Board Dimensions

5.8" x 3.9" (14.73cm x 9.91cm)

Power Consumption

+5.0V +/- 0.25V 2.0 Amps maximum

Operating Characteristics

32 F to 131 F (0 C to 55 C)10% to 90% Relative Humidity, non condensing

Storage Characteristics

-40 F to 167 F (-40 C to 75 C)