Lenovo x3550 M4 Installation And Service Manual page 292

Figure 174. Power information label
12. If you are adding a power supply to the server, attach the redundant power
Figure 175. Redundant power information label
Removing the hot-swap drive backplane
Use this information to remove the hot-swap drive backplane.
About this task
To remove the hot-swap hard disk drive backplane, complete the following steps:
Procedure
1. Read the safety information that begins on "Safety" on page vii and
2. Turn off the server and peripheral devices and disconnect the power cords and
3. Remove the cover (see "Removing the cover" on page 36).
4. Pull the hard disk drives out of the server slightly to disengage them from the
5. Remove the hot-swap hard disk drive backplane. If you would like to remove
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System x3550 M4 Type 7914: Installation and Service Guide
information label that comes with this option on the server cover near the
power supplies.
"Installation guidelines" on page 33.
all external cables, if necessary.
hard disk drive backplane (see "Removing hot-swap hard disk drives" on page
211).
the 3.5-inch drive backplane.
a. Adjust the latch to the unlocked position.