Lenovo 82121QU, User Manual, Page: 26 / 70

Connector Description
Audio line in connector Used to receive audio signals from an external audio device,
such as a stereo system. When you attach an external audio
device, a cable is connected between the audio line out
connector of the device and the audio line in connector of the
computer.
Audio line out connector Used to send audio signals from the computer to external
devices, such as powered stereo speakers (speakers with
built-in amplifiers), headphones, multimedia keyboards, or the
audio line in connector on a stereo system or other external
recording device.
Ethernet connector Used to attach an Ethernet cable for a local area network
(LAN).
Note: To operate the computer within FCC Class B limits, use
a Category 5 Ethernet cable.
Keyboard connector Used to attach a keyboard that uses a standard keyboard
connector.
Mouse connector Used to attach a mouse, trackball, or other pointing device that
uses a standard mouse connector.
Parallel connector Used to attach a parallel printer, parallel scanner, or other
devices that use a 25-pin parallel connector.
Serial connector Used to attach an external modem, serial printer, or other
devices that use a 9-pin serial connector.
USB connectors Used to attach a device that requires a Universal Serial Bus
(USB) connection, such as a USB scanner or USB printer. If you
have more than eight USB devices, you can purchase a USB
hub, which you can use to connect additional USB devices.
Obtaining device drivers
You can obtain device drivers for operating systems that are not preinstalled at
http://www.lenovo.com/think/support/ on the World Wide Web. Installation
instructions are provided in README files with the device-driver files.
10
User Guide