Scsi Id Number - Plextor PX-40TSe Operation Manual

Installing and Removing Jumpers
Ensure power to the drive is OFF before installing or removing jumpers.
To remove a jumper, pull it off with your fingers or a pair of needle-nose pliers.
To add a jumper, push it onto the jumper pins. Extra jumpers are supplied with
the UltraPleX in addition to the three jumpers already installed at the factory.
CAUTION: Install jumpers vertically across each pin as shown. Do not
connect one pin switch to another by installing the jumpers
lengthwise. Doing so could result in damage to the drive.
Install jumpers this way.

SCSI ID Number

It is possible to chain (using a daisy chain cable) SCSI peripherals to a single
SCSI interface board or to the SCSI port of an Apple computer. A narrow SCSI
port, like those found on the UltraPleX 40max, can support up to seven SCSI
devices. A wide SCSI port, like the UltraPleX Wide, can support up to 15.
NOTE : To guarantee specified performance, cable length of all daisy chain
cables and cabling in external case should not exceed 1.5 meters. It is
physically impossible to daisy chain 15 external drives with total cable
length under 1.5 meters. However, daisy chaining a few drives together
should be possible with no loss of performance. When using multiple
SCSI peripherals, however, it is necessary to set each peripheral to a
unique SCSI ID number.
If you bought a Plextor kit with a SCSI interface board, both the drive and the
board are SCAM compliant. This means each time you turn on your computer,
the drive will internally reset its SCSI ID to avoid any conflict. If you separately
purchased or already own a SCSI interface board, it may not be SCAM compliant.
For those of you without SCAM adapters, your Plextor CD-ROM drive can be
set to use one of eight SCSI ID numbers. The drive should arrive with its SCSI
ID set to 3. Accordingly, if you already use another SCSI peripheral, and its SCSI
ID is also set to 3, you must change the SCSI ID number of this peripheral or the
CD-ROM drive. In the past, this always had to be done manually. If you connect
your UltraPleX to an existing SCSI controller, you will still need to go through
this exercise of checking, and possibly changing, SCSI IDs.
Jumper
CHAPTER 6 — Drive Switch/Jumper/Dial Settings
DO NOT install jumpers this way.
ULTRAPLEX 40X OPERATION MANUAL
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