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Supports both wide and non-wide SCSI devices simultaneously.Wide SCSI host adapter provides very fast transfer rates on the SCSI bus. This card will support a total of 15 SCSI devices (15 wide SCSI internal, 15 wide external, or up to 7 non-wide drives and 8 wide drives internal.
Small Image of AHA-2740W
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

Bios Updates and Other Downloadable Files

Bios Updates and Other Downloads




Microsoft Windows NT

Novell NetWare

Novell NetWare Downloads


SCO Unix

Hardware Installation
connecting wide and narrow (html 73 kb)
Installing Drivers or Software
cd install netware 401 (html 69 kb)
cdrom in dos (html 69 kb)
unix driver disk conversion (html 69 kb)
loading adaptec dsk drivers (html 71 kb)
netware 3.12 cd install (html 68 kb)
Product Documentation
Install Guide for the AHA-2740W/2742W/2744W (PDF 170 KB)
User Guide for the AHA-2740W/2742W/2744W (PDF 539 KB)
Use Your Product
scsi terms explained (html 77 kb)
sense codes described (html 96 kb)
Supported Operating Systems
IBM OS/2 1.3x
IBM OS/2 2.x
Microsoft MS-DOS 5.x
Microsoft MS-DOS 6.x
Microsoft Windows 3.10
Microsoft Windows 95
Microsoft Windows 95a
Microsoft Windows 95b
Microsoft Windows 95c
Microsoft Windows for Workgroups 3.11
Microsoft Windows NT 3.51
Microsoft Windows NT 4.0
Novell NetWare 3.10
Novell NetWare 3.11
Novell NetWare 3.12
Novell NetWare 3.2
Novell NetWare 4.0
Novell NetWare 4.01
Novell NetWare 4.10
Novell NetWare 4.11
Novell NetWare 4.12
Novell NetWare 4.20
SCO Unix
Number of devices
Supports up to fifteen (15) disks under DOS 5.0

Bus System Interface Type

32-bit EISA
External Connectors
68-pin SCSI-3 High Density
Internal Connectors

50-pin SCSI-2
68-pin SCSI-3

Data Transfer Rate
up to 20 MB/sec
5 years

Device Protocol


Hard Disk Capacity

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

Advanced SCSI Features

Advanced SCSI Programming Interface (ASPI) compliant,
multithreaded I/O,
tagged queuing,
synchronous and asynchronous data transfer,
8 and 16-bit data transfers

Electrical Termination

Single-ended, active, software-controlled

Board Dimensions

7 inches (17.8 cm) L
5 inches (12.7 cm) H

Power Consumption

+5.0 +/- 0.25 Volts at 2.0 amps maximum

Operating Characteristics

0 C to 55 C (32 F to 131 F)
10% to 95%, non-condensing Relative Humidity

Storage Characteristics

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