Dell Dimension XPS 50 Reference Manual page 51

support.dell.com
Before you install your drive, check the documentation that came with the drive to
make sure that it is configured to work with other drives already installed in your com-
puter. You may need to change jumper or switch settings on the new drive to avoid
conflicts with drives already installed.
NOTE: If you are installing a tape drive, configure the drive for device address DS4
rather than DS2 or DS3 as may be indicated in the drive documentation.
All enhanced integrated device electronics (EIDE) devices should be configured for
the Cable Select jumper position, which assigns master and slave status to devices by
their position on the interface cable. In this configuration, the drive attached to the last
connector on the interface cable is the master or boot drive (drive 0) and the drive
attached to the middle connector on the interface cable is the slave drive (drive 1).
Refer to the drive's documentation for instructions on setting the Cable Select jumper
position.
When installing a drive, you connect two cables—a DC power cable and an interface
cable—to the back of the drive.
The DC power cable comes from the power supply and contains a 4-pin connector
that is keyed to avoid incorrect insertion. Do not force two connectors together if they
do not fit properly. Your drive's power input connector (to which you connect the DC
power cable) resembles the connector shown in Figure 3-4.
The interface cable is attached to an interface connector either on the system board or
on a controller card. The system board contains a diskette-drive interface connector
(labeled "FLOPPY") and two EIDE interface connectors (a primary one labeled "PRI
IDE" and a secondary one labeled "SEC IDE"). Connect EIDE hard-disk drives to the
primary connector; connect EIDE devices such as CD-ROM drives, Zip drives, or tape
drives to the secondary connector.
power input
connector
DC power cable
Installing Drives 3-5