Lenovo THINKCENTRE 4473 - Manual (Page 24)

Connector Description
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.
Microphone connector Used to attach a microphone to your computer when you want to record sound or if
you use speech-recognition software.
PS/2 keyboard connector
(optional) Used to attach a keyboard that uses a PS/2 keyboard connector.
PS/2 mouse connector
(optional) Used to attach a mouse, a trackball, or other pointing devices that use a PS/2
mouse connector.
Serial port Used to attach an external modem, a serial printer, or other devices that use a
9-pin serial port.
USB connector Used to attach a device that requires a USB connector, such as a USB keyboard, a
USB mouse, a USB scanner, or a 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.
VGA monitor connector Used to attach a VGA monitor or other devices that use a VGA monitor connector.
10 ThinkCentre User Guide