62 Removing and Installing Partsw w w . d e l l . c o m | s u p p o r t . d e l l . c o m1 power connector Insert the power cable.2 sound card connectors (3) • Line-in connector — Use the blue line-in connector to attach a record/playbackdevice such as a cassette player, CD player, or VCR.• Line-out connector — Use the green line-out connector to attach headphonesand most speakers with integrated amplifiers.• Microphone connector — Use the pink microphone connector to attach apersonal computer microphone for voice or musical input into a sound ortelephony program.3 USB 2.0 connectors (4) Use the back USB connectors for devices that typically remain connected, such asprinters and keyboards.It is recommended that you use the front USB connectors for devices that youconnect occasionally, such as joysticks or cameras, or for bootable USB devices.4 network adapter connector To attach your computer to a network or broadband device, connect one end of anetwork cable to either a network port or your network or broadband device.Connect the other end of the network cable to the network adapter connector onyour computer. A click indicates that the network cable has been securelyattached.NOTE: Do not plug a telephone cable into the network connector.On computers with a network connector card, use the connector on the card.It is recommended that you use Category 5 wiring and connectors for yournetwork. If you must use Category 3 wiring, force the network speed to 10 Mbps toensure reliable operation.5 VGA video connector If your monitor has a VGA connector, plug it into the VGA connector on thecomputer.6 card slots Access connectors for any installed PCI cards (two slots) and a x1 PCI Expresscard.NOTE: Although your computer has 4 card slot openings, it supports a maximum of 3cards; the bottom slot cannot be used.