56 Adding Partsw w w . d e l l . c o m | s u p p o r t . d e l l . c o m1 parallel connector Connect a parallel device, such as a printer, to the parallel connector. If you have a USBprinter, plug it into a USB connector.2 mouse connector Plug a standard mouse into the green mouse connector. Turn off the computer and anyattached devices before you connect a mouse to the computer. If you have a USBmouse, plug it into a USB connector.3 surround connector Use the black surround connector to attach multichannel-capable speakers.(On computers with a sound card, use the connector on the card.)4 line-out connector Use the green line-out connector to attach headphones and most speakers withintegrated amplifiers.(On computers with a sound card, use the connector on the card.)5 line-in connector Use the blue line-in connector to attach a record/playback device such as a cassetteplayer, CD player, or VCR.(On computers with a sound card, use the connector on the card.)6 network adapterconnectorTo attach your computer to a network or modem, connect one end of a network cableto either a network jack or your network device. Connect the other end of the networkcable to the network adapter connector on the back panel of your computer. A clickindicates that the network cable has been securely attached.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 your network.If you must use Category 3 wiring, force the network speed to 10 Mbps to ensurereliable operation.7 optional video cardconnectorPlug the cable from your monitor into the video card connector.(This feature is only available on computers with an optional video card.)8 modem connectors (2) Use the modem connector to connect your computer to the Internet.9 power connector Insert the power cable.10 voltage selection switch(may not be available onall computers)Your computer is equipped with either an auto-sensing voltage selector or a manualvoltage selection switch. See the safety instructions information in your ProductInformation Guide for more information.11 IEEE 1394 connector Attach high-speed serial multimedia devices, such as digital video cameras.(This feature is only available on computers with an optional IEEE 1394 connector.)network jack modem jack