HP Netserver L Server series - Manual (Page 87)

Chapter 9 Connecting the Monitor, Keyboard, Mouse, and UPS
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Release Lever
Figure 9-6. Removing a Power Supply Module
2. If you are not replacing the power supply module, insert the power supply
filler panel into the empty power supply bay:
a. Pinch the release lever on the filler panel and pull the lever down.
b. Slide the filler panel into the power bay. See Figure 9-7.
c. Press the release lever in until it clicks into place.