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AHA-3940W
The AHA-3940W supports up to fifteen 16-bit or 8-bit SCSI devices on each 16-bit Wide SCSI channel; up to seven of these can be 8-bit devices.
Small image of the AHA-3940W
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

IBM OS

IBM OS-2

Microsoft

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

Unix

SCO Unix
SCO UnixWare

Number of devices
Up to 7 devices under DOS 5.0 and above

Bus System Interface Type
PCI Local Bus
Data Transfer Rate
40 Mbytes/sec (20 Mbytes/sec per channel) Two channel Fast and Wide SCSI-2
Package Contents
AHA-3940 or AHA-3940W PCI MultiChannel host adapterSCSISelect configuration softwareAdaptec EZ-SCSI software for DOS and WindowsAdaptec 7800 Family Manager Set softwareDevice support for hard disk, removable, MO, CD-ROM, Photo CD, tape, DAT, scanner, and Floptical® drivesAdaptec CI/O Single Server software for NetWare network serversSytron's Proserve CX Lite™ - tape backup software for NetWareComplete hardware and software documentationTwo internal SCSI ribbon cables (external cable not included)

Supported Protocols

16-bit Fast SCSI-2

Advanced SCSI Features

Advanced SCSI Programming Interface (ASPI) compliant
Multitasking operating system support (through scatter/gather, disconnect/reconnect, tagged command queuing support)
Independent negotiation of high-speed data transfers (Fast, Wide, and synchronous) with each device
Support for 255 simultaneous active SCSI commands per channel

SCSI channels

Two fully independent PCI SCSI channels bridged to system PCI bus

Electrical drivers

Single-ended and active. Each channel is programmable via SCSISelect

Board Dimensions

6.875" x 4.0"

Power Consumption

5 V +/- 5% at 2.0 amps maximum

Operating Characteristics

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

Storage Characteristics

-67 F to 185 F (-65 C to 105 C)
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