Epson Progression U12 - Manual (Page 112)

7. When the drive position is correct, remove the nuts securing
it to the drive bay and pull it gently out of the bay. Then
tighten the four screws on the brackets, slide the drive back
into the bay, and replace the two nuts.
8. Now follow the steps in the next section to connect the
necessary cables to the drive.
Connecting the Cables
To connect the drive to your computer, you’ll attach it to two
cables: a power supply cable and a drive ribbon cable. The
drive interface and power supply socket are located at the back
of the drive. The illustration below shows the drive ribbon
cable connected to the interface on the top diskette drive.
drive cable
Installing and Removing Drives 4-9