Extreme Networks ExtremeSwitching X440-G2 Series Hardware Installation Manual page 270

6 Carefully slide the power supply all the way into the power supply bay.
See Figure 213.
Figure 213: Installing a 750 W AC Power Supply
7 Push the power supply in until the latch snaps into place.
Caution
Do not slam the power supply into the switch.
ExtremeSwitching and Summit Switches: Hardware Installation Guide
Replacing AC Power Supplies
270