HP 280 G2 Maintenance And Service Manual page 50

4. Remove the power cable from the clip on the base pan.
5. Disconnect the power supply cables from the following system board connectors:
ATX_CPU
ATX_PWR
6. Press the tab (1) on the base pan in front of the power supply that holds it in place.
42 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis