This 32-bit PCI to Ultra SCSI adapter supports up to 7 Ultra SCSI devices. One Internal 50-pin, and one external 50-pin high density connector are provided. Up to 20 MB per second throughput is possible
Small Image of AHA-2940AU
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

Select your operating system or software below



Linux Driver Source

Linux Driver Source Code


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)
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)
7800 Diskette Contents (HTML 68 KB)
OS/2 Driver Installation (HTML 68 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)
7800 OS/2 Issues (HTML 68 KB)
SCO Unix Driver Installation (HTML 75 KB)
7800 Fms Support List (HTML 72 KB)
Non-Volatile RAM (HTML 68 KB)
Intel 'Seattle' SE440BX-2 Motherboards (HTML 68 KB)
Product Documentation
Install Guide for the AHA-2940U/2940UW (PDF 191 KB)
Use Your Product
SCSI Select User's Guide (HTML 83 KB)
SCSI Terms Explained (HTML 77 KB)
Sense Codes Described (HTML 96 KB)
Supported Operating Systems
Microsoft MS-DOS 3.x, 4.x, 5.x, 6.x
Microsoft Windows 3.10
Microsoft Windows for Workgroups 3.11
Microsoft Windows 95
Microsoft Windows 98
Microsoft Windows 98 Second Edition
Microsoft Windows Millennium Edition
Microsoft Windows NT 3.51
Microsoft Windows NT 4.0
Microsoft Windows 2000
Microsoft Windows XP
Microsoft Windows Server 2003 (driver embedded)
Microsoft Windows Vista x86, 32-bit
Microsoft Windows Server 2008 x86, 32-bit
Novell NetWare 3.1x
Novell NetWare 3.2
Novell NetWare 4.0, 4.01
Novell NetWare 4.10, 4.11, 4.12
Novell NetWare 4.20
Novell NetWare 5.0, 5.10
SCO Openserver 5.0, 5.01, 5.02, 5.03, 5.04, 5.05
SCO Unix
SCO UnixWare 2.0, 2.10, 2.11
IBM OS/2 2.x
IBM OS/2 Warp Client 3.0, 4.0
IBM OS/2 Warp Server 3.0, 4.0
Customer Needs
  Internal and external Ultra SCSI connectivity
System Environment
Number of devices
Up to 7 total

Bus System Interface Type

32-bit PCI
External Connectors
50-pin High Density
Internal Connectors
50-pin Standard
Data Transfer Rate
Up to 20MB/sec
System Requirements
  • IBM-compatible PC-486, Pentium, or above
  • Windows NT, Windows 95, Windows 3.1, or DOS 6.0, OS/2, UNIX or Netware Operating System
  • PCI expansion slot
  • SCSI peripheral
Package Contents
  • AHA-2940 Ultra SCSI Card
  • EZ-SCSI 5.0 software (for use only with Windows 95, 98, ME, or Windows NT 4.0 operating systems)
  • 50-pin internal SCSI cable
  • Quick installation guide
  • Reference guide
  • Registration card
5-year manufacturing and materials warranty

Supported Protocols


Advanced SCSI Features

Advanced SCSI Programming Interface (ASPI) compliant
multi-threaded I/O
tagged queuing
synchronous and asynchronous Fast and Wide
bootable from attached disks

Hard Disk Capacity

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

Electrical Drivers

Single-ended, active, programmable via SCSISelect configuration utility

Board Dimensions

4.75" x 3.5"

Operating Characteristics

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

Storage Characteristics

-67 F to 185 F (-55 C to 85 C)

Regulatory Certification

FCC, UL, C-tick, CE, VCC

Mean Time Before Failure (MTBF)

544,264 hours at 40 degrees C