Adaptec AHA-2940AU - Storage Controller Ultra SCSI 20 MBps User Manual

1 Introduction
®
The Adaptec AHA -2940Ultra and AHA-2940Ultra
Wide PCI-to-Fast SCSI host adapters provide a pow-
erful multitasking interface between your com-
puter'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-2940Ultra/2940Ultra
Wide. The following figures show the major compo-
nents on the AHA-2940Ultra and AHA-2940Ultra
Wide.
50-pin 8-bit Internal
SCSI Connector
50-pin 8-bit
External
SCSI
Connector
Adaptec AHA-2940 Ultra
68-pin 16-bit
Internal SCSI
Connector
68-pin 16-bit
External
SCSI
Connector
Adaptec AHA-2940 Ultra Wide
Host Adapter
BIOS LED Connector
Host
Adapter
LED
AIC-78xx SCSI Protocol Chip
50-pin 8-bit Internal LED Connector
SCSI Connector
Host
Adapter
LED
Host Adapter
BIOS
AIC-78xx SCSI Protocol Chip
1