Epson Equity 286 PLUS - Manual (Page 68)

If you have a 3 1/2-inch diskette drive, insert the diskette with the
label facing up and the metal shutter leading into the drive, as
shown in the following illustration. Slide the diskette into the
drive until it clicks into place.
When you want to remove the diskette, make sure the drive
light is off; then press the release button. When the diskette
pops out, remove it and store it properly.
Caution
Never remove a diskette or reset or turn off the computer
while a diskette drive light is on. You could lose data. Also,
be sure to remove all diskettes before you turn off the
computer.
Using Your Computer 3-17