• DisplayPort connectorUsed to send or receive audio and video signals. Another audio or video device (such as ahigh-performance monitor) can be attached to this DisplayPort connector.• Ethernet connectorUsed to connect an Ethernet cable for a LAN.Note: To operate the computer within Federal Communications Commission (FCC) Class B limits, use aCategory 5e or better Ethernet cable.• Microphone connectorUsed to connect a microphone to your computer when you want to record sound or if you usespeech-recognition software.• Padlock loopUsed to secure a padlock. For more information, see “Locking the computer cover” on page 53.• PCI/PCI-Express card slot (different cards provide different connectors)To improve the operating performance of your computer, you can connect PCI/PCI-Express cards intothis slot. Depending on your computer model, the connectors in this area might vary.• Power cord connectorUsed to connect the power cord to your computer for power supply.• Rear Wi-Fi antenna coverUsed to protect the rear Wi-Fi antenna that is optional.• Security-lock slotUsed to secure a Kensington-style cable lock. For more information, see “Attaching a Kensington-stylecable lock” on page 54.• Serial connectorUsed to connect an external modem, a serial printer, or other devices that use a serial connector.• USB 2.0 connectorUsed to connect a device that requires a USB 2.0 connection, such as a keyboard, a mouse, a scanner, aprinter, or a personal digital assistant (PDA).• USB 3.0 connectorUsed to connect a device that requires a USB 2.0 or USB 3.0 connection, such as a keyboard, a mouse, ascanner, a printer, or a PDA.• VGA connectorUsed to send or receive video signals. Another video device (such as a monitor) can be attached to thisvideo graphics array (VGA) connector.30 Lenovo S510 Hardware Maintenance Manual