Dock controls, connectors, and indicator
Indicator in ThinkPad logo: The indicator is solid on when the dock is connected to ac power.
Audio connector: Connect headphones or a headset with a 3.5-mm (0.14-inch), 4-pole plug.
USB-C connector (Thunderbolt 3 compatible): Use the connector to transfer data (with high speed
supported by the Thunderbolt 3 technology), charge your device, or connect to an external display.
• This connector does not support the external display if your computer does not have a USB-C connector
(Thunderbolt 3 compatible).
• Do not connect your computer to this connector.
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
ThinkPad Thunderbolt 3 Dock Gen 2 ThinkPad Thunderbolt 3 Workstation Dock User Guide