Lenovo THINKSERVER 3821 - Manual (Page 169)

2. Carefully rotate the power-supply cage into the server chassis. The locating tabs
on the power-supply cage must fit over the corresponding tabs on the front latch
bracket.
1 Power-supply cage handle
2 Power-supply cage
3 Power-supply cage front latch bracket
4 Locating tabs
5 Notch
6 Locating tabs
3. Rotate the power-supply cage handle down until the handle tip engages the
notch in the front latch bracket; then, lower the handle until it locks in place
(power supply cage closed
1 ).
Chapter 7. Installing optional devices and replacing customer replaceable units 161