Lenovo ThinkCentre M800 Hardware Maintenance Manual page 38

• Audio line-out connector
Used to send audio signals from the computer to external devices, such as powered stereo speakers,
headphones, or multimedia keyboards. To attach a stereo system or other external recording device, a
cable is connected between the audio line-in connector of the device and the audio line-out connector
of the computer.
Note: If your computer has both an audio line-out connector and a headset connector or headphone
connector, always use the headset connector or headphone connector for earphones, headphones, or a
headset. However, a headphone connector does not support the microphone of a headset.
• DisplayPort connector
Used to connect a high-performance monitor, a direct-drive monitor, or other devices that use a
DisplayPort connector.
• Ethernet connector
Used to connect an Ethernet cable for a local area network (LAN).
Note: To operate the computer within Federal Communications Commission (FCC) Class B limits, use a
Category 5e or better Ethernet cable.
• Microphone connector
Used to connect a microphone to your computer when you want to record sound or if you use
speech-recognition software.
• Padlock loop
Used to secure a padlock. For more information, see "Locking the computer cover" on page 55.
• PCI/PCI-Express card area (different cards provide different connectors)
To improve the operating performance of your computer, you can connect PCI/PCI-Express cards into
this area. Depending on your computer model, the connectors in this area might vary.
• Power cord connector
Used to connect the power cord to your computer for power supply.
• PS/2 keyboard connector
Used to connect a keyboard that uses a Personal System/2 (PS/2) keyboard connector.
• PS/2 mouse connector
Used to connect a mouse, a trackball, or other pointing devices that use a PS/2 mouse connector.
• Serial connector
Used to connect an external modem, a serial printer, or other devices that use a serial connector.
• Security-lock slot
Used to secure a Kensington-style cable lock. For more information, see "Attaching a Kensington-style
cable lock" on page 57.
• USB 2.0 connector
Used to connect a device that requires a USB 2.0 connection, such as a keyboard, a mouse, a scanner, a
printer, or a PDA.
• USB 3.0 connector
Used to connect a device that requires a USB 2.0 or USB 3.0 connection, such as a keyboard, a mouse, a
scanner, a printer, or a PDA.
• VGA connector
Used to connect a video graphics array (VGA) monitor or other devices that use a VGA connector.
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ThinkCentre M800 and M900 Hardware Maintenance Manual