Dell Inspiron 1721 (Mid 2007) - Manual (Page 28)

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About Your Computer
• MultiMediaCard (MMC)
• Memory Stick
• Memory Stick PRO
• xD-Picture Card
• Hi Speed-SD
• Hi Density-SD
I E E E 1 3 9 4 CONNECTOR — Connects devices supporting IEEE 1394 high-speed
transfer rates, such as some digital video cameras.
VIDEO CONNECTOR
NETWORK CONNECTOR ( R J - 4 5 )
NOTICE:
The network connector is slightly larger than the modem connector. To
avoid damaging the computer, do not plug a telephone line into the network
connector.
U S B CONNECTORS
Connects video devices, such as a monitor.
Connects the computer to a network. The two lights next to
the connector indicate status and activity for wired network
connections.
For information on using the network adapter, see the device
user’s guide supplied with your computer.
Connect USB devices, such as a mouse, keyboard, or printer.