Dell Dimension 2350 Owner's Manual page 76

CAUTION: Some network adapters automatically start the computer when they
are connected to a network. To guard against electrical shock, be sure to unplug
your computer from its electrical outlet before installing any cards.
Align the cutout on the bottom of the card with the crossbar in the system board
8
connector. Gently rock the card into the connector until it is fully seated.
76
A d d i n g Par ts
card
card cutout
card connector
on system board
crossbar