Apple Power Macintosh 8500/120 Series - Manual (Page 163)

8 Align the connector end of the card with the expansion slot.
9 Press the card gently but firmly until the connector is fully inserted.
m Slide the card between the two levers that held the access port cover you
removed earlier. You may need to press the levers apart slightly to guide the
card between them.
m Don’t force the card. If you meet a lot of resistance, pull the card out and
try again.
m To see if the card is properly connected, pull it gently. If it resists and stays
in place, it’s connected. (Make sure you don’t pull the card so much that
you accidentally disconnect it.)
If you have other cards to install, put them in now by repeating steps 6
through 9.
If your expansion card is
full-length, be sure that
it engages the card guide
in the computer’s interior.
Expansion slot Connector
151 Installing an Expansion Card