Epson Progression U12 - Manual (Page 128)

Removing a Hard Disk Drive From the Internal Buy
Follow these steps to remove a hard disk drive from the
internal drive bay:
1. If you are removing a hard disk drive in the position next to
the power supply, first remove the subassembly as
described in Chapter 2
2. Disconnect the power supply and drive cables from the drive,
as shown below. (If the subassembly is out of the computer,
you may have already disconnected these cables.)
power cable
Installing and Removing Drives 4-25