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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) plus floppy drive.
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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 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)
loading adaptec dsk drivers (html 71 kb)
netware 3.12 cd install (html 68 kb)
Product Documentation
User Guide for the AHA-2740W/2742W/2744W (PDF 539 KB)
Install Guide for the AHA-2740W/2742W/2744W (PDF 188 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 3.x
Microsoft MS-DOS 4.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
15 SCSI devices

Bus System Interface Type

32 bit, for EISA bus based computers (Fast and Wide SCSI)
External Connectors
68-pin SCSI-3 connector
Internal Connectors
50-pin standard
68-pin shrouded SCSI-3 header
Data Transfer Rate
20 MBytes/sec synchronous Fast and Wide
System Requirements
IBM compatible PC with an available EISA slot
Package Contents
AHA-2742W Host Adapter with floppy controller
Configuration Software
Installation Guide
5 years

Board Dimensions

7" x 5" (17.8 cm x 12.7 cm)

Power Consumption

+5.0 +/- 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)

MTBF (mean time between failures, Bellcore)

110,000 hours