Dell OptiPlex 755 - Manual (Page 39)

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User's Guide
Cards
Cards
Your Dell™ computer supports a PS/2 serial port adapter and provides the following connectors on the system board for PCI and PCI Express cards:
l Two connectors for low-profile PCI cards
l One connector for a low-profile PCI Express x16 card
PCI Cards
Installing a PCI Card
If you are replacing a PCI card, remove the current driver for the card from the operating system. See the documentation that came with the card for
information.
1. Follow the procedures in Before You Begin .
2. Remove the computer cover (see Removing the Computer Cover ).
3. Gently press the release tab on the card-retention latch all the way up.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your
computer's electronic components. You can do so by touching an unpainted metal surface on the computer chassis.
NOTE: Installing filler brackets over empty card-slot openings is necessary to maintain FCC certification of the computer. The brackets keep dust and dirt
out of your computer and maintains the airflow that cools your computer.
NOTE: Your Dell computer includes only PCI and PCI Express card connectors. ISA cards are not supported.
1 card 4 card insert
2 card-retention latch 5 release tab
3 system board connector