Apple Power Macintosh 7200 - Manual (Page 141)

6 Being careful not to touch the sharp edges, pull out the port access cover behind the
expansion slot you want to use, and set the access port cover aside.
7 Remove the expansion card from its static-proof bag.
Hold the card by its edges to avoid touching the connector.
Connector
Push the port access cover in gently with the finger of
one hand while pulling it straight up with the other hand.
(back of computer)
141 Installing an Expansion Card