1
Introduction
The Adaptec SCSI Card 39320A enables you to connect up to 30
SCSI devices—such as very large arrays of high-performance hard
disk drives, external storage subsystems, Ultra320/160 hard disk
drives, scanners, and CD-ROM drives—to any Intel-based
computer with 64- or 32-bit PCI/PCI-X expansion slots.
The Adaptec SCSI Card 39320A has two independent SCSI
channels with a maximum throughput of 320 MB/sec per SCSI
channel. SCSI Channel A (marked CH A on the card) has one
internal 68-pin Low Voltage Differential/Single-Ended (LVD/SE)
connector and one external 68-pin very high-density cable
interconnect (VHDCI) connector. SCSI Channel B (marked CH B on
the card) has one internal 68-pin LVD/SE connector and one
external 68-pin VHDCI connector.
You can connect Ultra320/160 and Ultra2 SCSI devices to the
68-pin LVD connectors on both SCSI channels. When connecting
these newer devices along with older legacy SCSI devices, Adaptec
recommends that you dedicate them as separate channels. See
Support for Older SCSI Devices on page 2
for more information.
Although the Adaptec SCSI Card 39320A is a 64-bit PCI/PCI-X
card, it also works in a 32-bit PCI slot. When installed in a 32-bit
PCI slot, the card automatically runs in the slower 32-bit mode.
68-pin external
LVD/SE VHDCI connector
Channel A
68-pin internal LVD/SE
connector Channel A
68-pin internal LVD/SE
connector Channel B
68-pin external
LVD/SE VHDCI connector
Channel B
ASC-39320A IG.fm Page 1 Tuesday, July 29, 2003 3:17 PM
