Epson Equity 320SX PLUS - Manual (Page 87)

5. The cover is also secured by two latches on the back of
the cover near the comers. Press both latches inward and
then lift up the cover from the back panel. You might
meet some resistance from the g-rounding tabs along the
inside of the cover.
latches
6. Pull the cover away from the front of the computer to
completely remove it. Then set it aside.
Accessing Internal Components 5-3