Epson Progression U12 - Manual (Page 106)

You can install either one full-height or two half-height hard
disk drives in the internal drive bay.
If you are installing a hard disk, it is best to install it in the
internal bay. This reserves the external bay for any devices that
need to be accessible from the outside, such as a diskette drive
or tape drive. If you prefer, however, you can install a hard disk
in the external bay.
Installation/Removal Sequence
before you begin, check the table below to make sure you
perform all the necessary steps in the proper sequence.
Installation/removal guide
If you are . . . Begin with this section . . .
Installing a hard disk drive or ‘Checking the IDE Hard Disk Drive
removing one and leaving another Jumpers’ on page 4-4
in the computer
Removing your only hard disk drive ‘Removing a Hard Disk Drive From
the Internal Bay’ on page 4-25
Installing a diskette drive or other ‘Installing a Drive In the External
device Bay’ on page 4-6
Removing a diskette drive or other ‘Removing a Drive From the
device External Bay’ or page 4-14.
Information in each of these sections guides you to the
instructions you should follow next.
When you finish installing or removing your drive(s), see
“Post-installation Procedures” at the end of this chapter for
additional steps you may need to perform.
Installing and Removing Drives 4-3