Adaptec 2940W - Page 2

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AHA-2940/2940W Installation Guide
Part Number: 510881-00, Rev. A
Print Spec Number: 493890-00
Current Date: 7/5/95 ECN Date: 7/11/95
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Introduction
The Adaptec AHA
®
-2940 and AHA-2940W PCI-to-
Fast SCSI host adapters provide 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.). Collectively, both host adapters are referred to
as the AHA-2940/2940W. The following figures
show the major components on the AHA-2940 and
AHA-2940W.
1
Host Adapter BIOS
50-pin 8-bit Internal
SCSI Connector
Host Adapter LED
AIC-78xx SCSI Protocol Chip
50-pin 8-bit
External
SCSI
Connector
LED Connector
Adaptec AHA-2940
Host Adapter BIOS
50-pin 8-bit Internal SCSI Connector
Host
Adapter
LED
AIC-78xx SCSI Protocol Chip
68-pin 16-bit
External
SCSI
Connector
LED Connector
68-pin 16-bit
Internal SCSI
Connector
Adaptec AHA-2940W