Dell 720H2C appendix Drives

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12. If present, lower the card retention device that lays over the installed cards and snap it into place.
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13. Replace the computer cover (see Replacing the Computer Cover), reconnect the computer and devices to electrical outlets, and then turn them on.
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Network Adapter and Sound Card Settings
If you installed a sound card:
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1. Enter system setup (see Entering System Setup), select Integrated Audio Controller, and then change the setting to Off.
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2. Connect external audio devices to the sound card connectors. Do not connect external audio devices to the microphone, speaker/headphone, or line-in
connectors on the back panel.
If you removed a sound card:
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1. Enter system setup (see Entering System Setup), select Integrated Audio Controller, and then change the setting to On.
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2. Connect external audio devices to the audio connectors on the back panel of the computer.
If you installed an add-in network adapter and want to disable the integrated network adapter:
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1. Enter system setup (see Entering System Setup), select Integrated NIC Controller, and then change the setting to Off.
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2. Connect the network cable to the add-in network adapter connectors. Do not connect the network cable to the integrated connector on the back panel.
If you removed an add-in network connector:
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1. Enter system setup (see Entering System Setup), select Integrated NIC Controller, and then change the setting to On.
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2. Connect the network cable to the integrated connector on the back panel of the computer.
Drives
Your computer supports:
lSix SATA devices (hard drives or optical drives)
lTwo IDE devices (two hard drives or two optical drives)
lOne floppy drive
lOne Media Card Reader
1
graphics card bridge (not present on some
dual graphics card configurations)
2
power
connectors (2)
3
dual-PCI Express
graphics cards
NOTICE: To connect a network cable, first plug the cable into the network port or device and then plug the cable into the computer.
NOTICE: When removing and replacing drives, be sure to leave the drive data and power cables connected to the system board.