HP StoreEver MSL Tape Libraries - Manual (Page 65)

3. From the back of the device, find the access hole for the magazine to be released. See Figure
36 , Figure 37 , and Figure 38 .
Figure 36 Access to release lever for the right magazines in the master Library
.
Figure 37 Access to release lever for the left magazines in the master Library
.
Figure 38 Access holes for the right and left magazines in the lower Library
.
HP StorageWorks MSL Library Extender user guide 65