Lenovo 7821, 7782, 7824, 7823, 7783 manual Connector, Description

Connector	Description
DisplayPort connector	Used to attach a high-performance monitor, a direct-drive monitor, or other devices
	that use a DisplayPort connector.
	Note: The DisplayPort connector is not applicable on some models. If your
	computer has a graphics card installed, be sure to use a monitor connector on
	the graphics card.
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	Used to attach a keyboard that uses a PS/2 keyboard connector.
(optional)
PS/2 mouse connector	Used to attach a mouse, a trackball, or other pointing devices that use a PS/2
(optional)	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.
	Note: The VGA connector is not applicable on some models. If your computer has
	a graphics card installed, be sure to use a monitor connector on the graphics card.

Chapter 1. Product overview 9