10. Align the card over the
Align the card over this slot.
11.Press down on the card until the connector is solidly in place.
Don’t force the card. If you meet resistance, pull the card out and try again. To see if the card is properly connected, lift it gently. If it resists and stays in place, it’s connected.
12.Slide the logic board back in.
Push on the edge of the logic board until it is firmly in place.
13.If there is a connector on the card that you just installed (for example, if you are installing an Apple IIe Card), remove the access cover on the back panel you removed earlier.
Pinch together the plastic tabs on the access cover to remove it and pop it out. With the access cover off, you can use the port on the card you just installed.