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C740-14IML

1. Power connector / USB Type-C^TM connector (USB 3.1 Gen 1)	Connect to ac power with the included power cord and ac power adapter. When not connected with the ac power adapter, it acts as a USB Type-C connector. For more information about this connector, see USB Type-C connector (USB 3.1 Gen 1). Note: An appropriate USB Type-C cable is required for connecting external devices.
2. Charging status indicator	Indicate whether the computer is connected to ac power. Solid white: connected to ac power; battery capacity 91% – 100% Solid amber: connected to ac power; battery capacity 1% – 90% Off: not connected to ac power
3. USB Type-C connector (USB 3.1 Gen 1)	Charge your computer. Charge USB Type-C compatible devices with the output voltage and current of 5 V and 3 A. Transfer data at USB 3.1 speed, up to 5 Gbps. Connect to an external display: USB Type-C to VGA: Maximum 1900 x 1200 pixels, 60 Hz USB Type-C to DP: Maximum 3840 x 2160 pixels, 60 Hz USB Type-C to HDMI: Maximum 3840 x 2160 pixels, 60 Hz 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. Connect to USB Type-C accessories to help expand your computer functionality. To purchase USB Type-C accessories, go to https://www.lenovo.com/accessories. Note: When the battery power is below 10%, the connected USB Type-C accessories might not work correctly.
4. Audio connector	Connect headphones or headsets with a 3.5-mm (0.14-inch), 4-pole plug. Note: This jack does not support standalone external microphones. If you use headsets, choose one with a single plug.

C740-15IML

1. Power connector / USB Type-C connector (USB 3.1 Gen 1)	Connect to ac power with the included power cord and ac power adapter. When not connected with the ac power adapter, it acts as a USB Type-C connector. For more information about this connector, see USB Type-C connector (USB 3.1 Gen 1). Note: An appropriate USB Type-C cable is required for connecting external devices.
2. Charging status indicator	Indicate whether the computer is connected to ac power. Solid white: connected to ac power; battery capacity 91% – 100% Solid amber: connected to ac power; battery capacity 1% – 90% Off: not connected to ac power
3. USB Type-C connector (USB 3.1 Gen 1)	Charge your computer. Charge USB Type-C compatible devices with the output voltage and current of 5 V and 3 A. Transfer data at USB 3.1 speed, up to 5 Gbps. Connect to an external display: USB Type-C to VGA: Maximum 1900 x 1200 pixels, 60 Hz USB Type-C to DP: Maximum 3840 x 2160 pixels, 60 Hz USB Type-C to HDMI: Maximum 3840 x 2160 pixels, 60 Hz 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. Connect to USB Type-C accessories to help expand your computer functionality. To purchase USB Type-C accessories, go to https://www.lenovo.com/accessories. Note: When the battery power is below 10%, the connected USB Type-C accessories might not work correctly.
4. Audio connector	Connect headphones or headsets with a 3.5-mm (0.14-inch), 4-pole plug. Note: This jack does not support standalone external microphones. If you use headsets, choose one with a single plug.