Dell OptiPlex 755 User Manual page 117

5 Align the PS/2 serial-port adapter bracket in the retention slot and press down firmly. Ensure that the
adapter is fully seated in the slot.
6 Before you close the card retention mechanism, ensure that:
• The tops of all cards and filler brackets are flush with the alignment bar.
• The notch in the top of the card or filler bracket fits around the alignment guide.
7 Secure the card(s) by closing the card retention latch and snapping it into place.
NOTICE:
Do not route card cables over the cards. Cables routed over the cards can prevent the computer cover
from closing properly or cause damage to the equipment.
117
Expansion Cards