Adaptec 1821900 User Reference - Page 19

Using the Adaptec SCSI Card 29160 and SCSI Devices Using Ultra160 Hard Disk Drives s We recommend that you connect your LVD (Ultra160 and Ultra2) SCSI devices to the two 68-pin connectors on the LVD-SE SCSI segment and that you connect your non-LVD SCSI devices (if any) to the two SE (single-ended) connectors on the SE SCSI segment. This allows the LVD SCSI devices to run at their maximum performance levels of 160 MBytes/sec or 80 MBytes/sec. If you combine LVD and non-LVD SCSI devices on the same SCSI segment, the data transfer rate of the LVD SCSI devices will drop down to non-LVD SCSI performance levels of up to 40 MBytes/sec. 68-pin internal LVD/SE connector 68-pin internal SE connector 50-pin internal SE connector 68-pin external Very High Density LVD/SE connector SE segment LVD-SE segment s Internal Ultra160 SCSI devices come from the factory with termination disabled and cannot be changed. Proper termination is provided by the terminator at the end of the internal Ultra160 SCSI cable. Using Scanners If you connect a scanner to the Adaptec SCSI Card 29160, you must install the scanner manufacturer's proprietary software drivers. See your scanner's documentation for details. 13