Apple Macintosh Performa 6100 Series - Manual (Page 102)

5 Remove the card from its static-proof bag.
Handle the card by its edges. Do not touch the connector.
6 Remove the adapter card assembly from its static-proof bag.
The adapter card assembly consists of an adapter card attached to a metal
bracket. Do not touch the connectors on the card.
Set aside the thumbscrews that came with the adapter card. You’ll need
them later.
NuBus card connector
Expansion slot connector
Connector
92 Appendix B