Removing and Installing Parts 73
  NOTE: Installing filler brackets over empty card-slot openings is necessary to maintain FCC certification 
of the computer. The brackets also keep dust and dirt out of your computer.
 
NOTICE: To connect a network cable, first plug the cable into the network device and then plug the 
cable into the computer.
4
Replace the computer cover, reconnect the computer and devices to electrical outlets, and 
then turn them on.
5
Remove the card driver from the operating system.
6
If you removed a sound card:
a
Enter system setup, select 
Integrated Audio Controller
, and then change the setting to 
On
.
b
Connect external audio devices to the audio connectors on the back panel of the 
computer.
7
If you removed an add-in network connector:
a
Enter system setup, select 
Integrated NIC Controller
, and then change the setting to 
On
.
b
Connect the network cable to the integrated connector on the back panel of the 
computer.
PCI Express Cards
Your computer supports:
• One PCI Express x1 card
• One PCI Express x16 card
• One PCI Express x4 card
If you are installing or replacing a PCI Express card, follow the procedures in the next section. If 
you are removing but not replacing a card, see "Removing a PCI Express Card" on page 79.
If you are replacing a card, remove the current driver for the card from the operating system.
If you are installing or replacing a PCI card, see "Installing a PCI Card" on page 69.