Dell PowerVault ML6000 - Manual (Page 299)

Chapter 12 Installing, Removing, and Replacing
Replacing the 5U Library Control Module
Dell PowerVault ML6000 User’s Guide 299
4
Remove the rack ears that fasten the module to the rack.
5
Loosen the thumbscrews located at the base of the front and rear of
the module.
1 Front Y-rail
2 Rear Y-rail
3 Y-rail (this end up)
4 Squeeze here to release