IBM x3630 M3 7377 Problem Determination And Service Manual page 210

c. (For 3.5-inch hard disk drive models only) If you have the optional hot-swap
SAS/SATA rear hard disk drive cage installed, make sure you lift the two
SATA cables up a little bit so they will not get damaged by the system fan
cage.
192
IBM System x3630 M3 Type 7377: Problem Determination and Service Guide