Hard Disk Drive Backplane Connectors - Lenovo System x3300 M4 Installation And Service Manual

The following illustration shows the light-emitting diodes (LEDs) on the microprocessor 2 expansion board.

Hard Disk Drive Backplane Connectors

The following illustrations show the connectors on the 2.5-inch and 3.5-inch hard disk drive backplanes
and the backplane assembly.
1. Connectors on the hot-swap 3.5-inch hard disk drive backplane:
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System x3300 M4 Installation and Service Guide