Epson Endeavor WG - Manual (Page 95)

Depending on the type of drive you are installing, you may
need to attach mounting frames to it before you install it in a
horizontal bay. Follow these guidelines:
If you are installing a diskette drive, skip to “Installing the
Drive” on page 3-20.
If you are installing a hard disk drive that has a
form factor, it must have mounting frames attached to it so
it fits properly in the horizontal drive bay. Follow the steps
in the next section.
If you are installing a hard disk drive that already has
mounting frames on it, see if it also has a plastic guiderail
and metal grounding plate attached to it. If so, follow step 1
on page 3-7 to remove the guiderail and grounding plate.
Then go to “Installing the Drive” on page 3-20.
3-18 Installing and Removing Drives