$6.00
This is what you remove if you add a card to one of the slots.
Description
Apple number 815-6035 or 810-6035. Expansion Port Cover for the Macintosh IIcx, IIci, Quadra 650, 700, and Power Mac 7100.
Mac IIcx, IIci, Quadra 650, Power Mac 7100 – Expansion Port Cover