Epson LT-286 - Manual (Page 74)

If you use an external 5 1/4-inch diskette drive, be especially careful
with your 5 1/4-inch diskettes. Because they are more flexible, and
because they do not have a metal shutter protecting their magnetic
surfaces, they are more easily damaged than 3 1/2-inch diskettes.
Always keep 5 1/4-inch diskettes in their protective envelopes
when you are not using them.
Inserting and Removing Diskettes
To insert a diskette into the drive, hold it with the label facing up
and the arrow on the left side pointing into the computer:
Slide the diskette into the drive until you feel it click into place.
To remove a diskette, press the release button on the diskette drive.
When the diskette pops out of the drive, pull it out and store it
properly in a diskette container.
4-14 Using the Equity LT-286