HP Netserver L Server series - Manual (Page 88)

Chapter 9 Connecting the Monitor, Keyboard, Mouse, and UPS
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Figure 9-7. Inserting the Power Supply Filler Panel
Connecting the Uninterruptible Power Supply
1. If you have an Uninterruptible Power Supply (UPS) installed in the rack,
turn it on.
2. Connect the serial cable between the UPS and the HP Netserver.
Refer to the user guide included with the UPS for additional information.
The HP Netserver LP 2000r performs a diagnostic test when the power
switch is turned on. If an error condition occurs, refer to Chapter 12,
"Troubleshooting."