Lenovo ThinkServer RD550 - Manual (Page 38)

10 Hot-swap redundant power supply 2 (available on some models)
11 Hot-swap redundant power supply 1
The hot-swap redundant power supplies help you avoid significant interruption to the operation of the
system when a power supply fails. You can purchase a power supply option from Lenovo and install the
power supply to provide power redundancy without turning off the server.
On each power supply, there are three status LEDs near the power cord connector. For information about
the status LEDs, see “Power supply status LEDs” on page 45.
9 Fiber cable release tool
A fiber cable release tool (FRU part number 00FC501) is attached to the rear of your server. This tool helps
you release the fiber cable from the PCIe card with an optical module.
Using the fiber cable release tool
To use the fiber cable release tool, do the following:
1. Locate the fiber cable release tool and then remove it from the rear of the server.
Figure 9. Removing the fiber cable release tool
2. Insert the fiber cable release tool under the fiber cable latch. Then, press the handle of the fiber cable
release tool downwards.
Figure 10. Using the fiber cable release tool
24 ThinkServer RD550 User Guide and Hardware Maintenance Manual