| Connector | Description | 
| Mouse connector | Used to attach a mouse, trackball, or other pointing device that | 
| 
 | uses a standard mouse connector. | 
| Keyboard connector | Used to attach a keyboard that uses a standard keyboard | 
| 
 | connector. | 
| Serial connectors | Used to attach an external modem, serial printer, or other | 
| 
 | devices that use a  | 
| Parallel connector | Used to attach a parallel printer, parallel scanner, or other | 
| 
 | devices that use a  | 
| 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 four USB devices, you can purchase a USB | 
| 
 | hub, which you can use to connect additional USB devices. | 
| 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. | 
| Audio line out connector | Used to send audio signals from the computer to external | 
| 
 | devices, such as powered stereo speakers (speakers with | 
| 
 | |
| 
 | audio line in connector on a stereo system or other external | 
| 
 | recording device. | 
| 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. | 
| Microphone connector | Used to attach a microphone to your computer when you want | 
| 
 | to record voice or other sounds on the hard disk if you use | 
| 
 | 
Obtaining device drivers
You can obtain device drivers for operating systems that are not preinstalled at http://www.ibm.com/pc/support/ on the World Wide Web. Installation instructions are provided in README files with the 
Chapter 1. Installing options 9
