Epson Progression U12 - Manual (Page 117)

Removing a Drive From the External Bay
Follow these steps to remove a drive from the external bay:
1. Disconnect the power supply and drive cables from the back
of the drive you want to remove, as shown below.
power supply cable
drive cable
2. Use the small wrench that came with your computer to
remove the two nuts securing the drive brackets to the front
of the drive bay.
4-14 installing and Removing Drives