Lenovo ThinkCentre M77 1990 User Manual page 21

Connector
Audio line-in connector
Audio line-out connector
DisplayPort connector
Ethernet connector
Microphone connector
PS/2 keyboard connector
(optional)
PS/2 mouse connector
(optional)
Serial port
USB connector
VGA monitor 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.
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.
Used to attach a high-performance monitor, a direct-drive monitor, or other devices
that use a DisplayPort 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.
Used to attach a microphone to your computer when you want to record sound or if
you use speech-recognition software.
Used to attach a keyboard that uses a PS/2 keyboard connector.
Used to attach a mouse, a trackball, or other pointing devices that use a PS/2
mouse connector.
Used to attach an external modem, a serial printer, or other devices that use a
9-pin serial port.
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.
Used to attach a VGA monitor or other devices that use a VGA monitor connector.
Description
Chapter 1
9
.
Product overview