Dell OptiPlex E1 - Manual (Page 109)

Installing Drives 7-5
Most interface connectors are keyed for correct insertion; that is, a notch or a missing
pin on one connector matches a tab or a filled-in hole on the other connector. Keying
ensures that the pin-1 wire in the cable (indicated by the colored strip along one edge
of the cable) goes to the pin-1 end of the connector.
The pin-1 end of a card-edge connector is usually identified by a notch cut about a
quarter of an inch from the end of the connector, as shown in Figure 7-5. A header
connector is usually keyed by the omission of one of its pins, while the corresponding
hole is filled in on the cable connector.
The pin-1 end of a connector on a board or a card is usually indicated by a silk-
screened “1” printed directly on the board or card.
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The 5.25-inch drive bays can accommodate any of the following types of half-height
drives:
‡
A diskette drive or tape drive that uses the diskette/tape drive interface on the
system board
‡
A CD-ROM or tape drive that uses the secondary EIDE interface on the system
board
‡
A CD-ROM or tape drive that uses its own controller card
To install a drive in a 5.25-inch drive bay, follow these steps.
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Check the documentation that accompanied the drive to verify that the drive is
configured for your computer system. Change any settings necessary for your
configuration.
NOTE: If you are installing a non-EIDE tape drive, check the documentation for
the drive to determine the jumper or switch settings used to designate the drive
as drive address DS4 (not DS2 or DS3 as may be indicated in the drive documen-
tation). Unless the drive is already set to drive 4, reconfigure its jumper or switch
setting (see “Jumpers” and “Switches” in Chapter 5).
If you are installing an EIDE CD-ROM or EIDE tape drive, configure the drive for
the Cable Select jumper position.