Dell POWEREDGE 4300 - Page 146

9-4 Dell PowerEdge 4300 Systems Installation and Troubleshooting Guide
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Most interface connectors are keyed for correct insertion; that is, a notch or a raised
tab on one connector matches a tab or a notch 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 ends of the connectors on both ends.
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Each drive in the external drive bays must connect to a four-wire DC power cable from
the system power supply. The connectors on these cables are labeled “P3,” “P4,”
“P5,” and “P6.” Connectors P3, P4, and P5 are used for 5.25-inch devices, whereas
connector P6 is used for the standard 3.5-inch diskette drive. Before connecting a
drive to a power cable, refer to Figure 9-5 to identify the correct cable connector to
use for a particular drive.
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interface connector on the board
interface connector on cable
connector latches (2)
5.25-inch drive
connector
3.5-inch drive
connector