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1. USB-C™ connectors (USB 3.1 Gen 2)	Charge your computer. Charge USB-C compatible devices with the output voltage and current of 5 V and 1.5 A. Transfer data at USB 3.1 speed, up to 10 Gbps. Connect to an external display: USB-C to VGA: 1920 x 1200 pixels, 60 Hz USB-C to DP: 3840 x 2160 pixels, 60 Hz Connect to USB-C accessories to help expand your computer functionality. To purchase USB-C accessories, go to https://www.lenovo.com/accessories. Supply power to another computer using P-to-P (Peer to Peer) 2.0 charging function. See Use P-to-P 2.0 charging function. Note: When the battery power is below 10%, the connected USB-C accessories might not work correctly.
2. Ethernet extension connector Gen 2	Make your computer thinner than the ones with a standard Ethernet connector. Use a ThinkPad Ethernet Extension Adapter Gen 2 to connect your computer to a local area network (LAN) through this connector. The ThinkPad Ethernet Extension Adapter Gen 2 is available as an option and shipped with some computer models only. You can purchase a ThinkPad Ethernet Extension Adapter Gen 2 from Lenovo at: https://www.lenovo.com/accessories. Note: The Ethernet extension connector Gen 2 and the adjoining USB-C connector (USB 3.1 Gen 2) cannot be used simultaneously.
3. Docking-station connector	Connect the computer to one of the following supported docks to extend the computer capabilities: ThinkPad Basic Docking Station ThinkPad Pro Docking Station ThinkPad Ultra Docking Station
4. USB 3.1 connector Gen 2	With greater data transfer rate, the USB 3.1 connector Gen 2 is used to connect USB-compatible devices, such as a USB keyboard, a USB mouse, a USB storage device, or a USB printer.
5. HDMI™ connector	Connect to a compatible digital audio device or video monitor, such as an HDTV. The HDMI connector on your computer supports the HDMI 2.0 standard by default. If you connect an external display to your computer through the HDMI connector with an HDMI 1.4 cable, the external display might not work. In this case, do one of the following: Use a qualified HDMI 2.0 cable. Change the HDMI standard of the HDMI connector from 2.0 to 1.4. To change the HDMI standard, enter the UEFI BIOS menu (see Enter the UEFI BIOS menu), and then configure HDMI Mode Select in the Config menu.
6. Audio connector	Connect headphones with a 3.5-mm (0.14-inch) and 4-pole plug to listen to the sound from the computer. Connect a headset with a 3.5-mm (0.14-inch) and 4-pole plug to listen to the sound from the computer or talk with others. Note: This connector does not support standalone external microphones.