Connector DescriptionAudio line-in connector Used to receive audio signals from an external audio device,such as a stereo system. When you attach an external audiodevice, a cable connects the audio line-out connector of thedevice to the audio line-in connector of the server.Audio line-out connector Used to send audio signals from the server to external devices,such as powered stereo speakers (speakers with built-inamplifiers), headphones, multimedia keyboards, or the audioline-in connector on a stereo system or other external recordingdevice.DisplayPort connector Used to attach a high-performance monitor, a direct-drivemonitor, or other devices that use a DisplayPort connector.Ethernet connector Used to attach an Ethernet cable for a local area network (LAN).Note: To operate the server within FCC Class B limits, use aCategory 5 Ethernet cable.Microphone connector Used to attach a microphone to your server when you want torecord sound or if you use speech-recognition software.Serial port Used to attach an external modem, a serial printer, or otherdevices that use a 9-pin serial port.USB connector Used to attach a device that requires a USB connector, such as aUSB keyboard, a USB mouse, a USB scanner, or a USB printer. Ifyou have more than eight USB devices, you can purchase a USBhub, which you can use to connect additional USB devices.VGA monitor connector Used to attach a VGA monitor or other devices that use a VGAmonitor connector.Chapter 4. Server controls and connectors 13