IBM x3630 M3 7377 Problem Determination And Service Manual page 222

9. If you are instructed to return the rear hard disk drive cage, follow all packaging
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IBM System x3630 M3 Type 7377: Problem Determination and Service Guide
Hot-swap backplane
2
signal cable (I C cable)
Hot-swap backplane
2
signal cable (I C cable)
instructions, and use any packaging materials for shipping that are supplied to
you.
LED signal cable
(from option package)
Rear hard disk drive
detect pin
LED signal cable
(from option package)