User's Guide

15–inch models
1. Ethernet connector
Connect to a local area network (LAN).
Note: When the green indicator is on, the computer is connected to a LAN. When
the yellow indicator blinks, data is being transmitted.
2. HDMI connector
Connect to a compatible digital audio device or video monitor, such as an HDTV.
3. USB (3.1 Gen 1) Type-A
connector (always-on)
The always-on connector can charge external devices when the computer is
turned off, in sleep or hibernation modes.
Note: The always-on function can be turned on or off in one or more of the
following software:
Lenovo Vantage
Lenovo PC Manager
UEFI/BIOS Setup utility
4. USB-C connector (USB 3.1
Gen 1)
• Charge USB-C compatible devices with the output voltage of 5 V and output
current of 3 A.
• Transfer data at USB 3.1 speed, up to 5 Gbps.
• Connect to USB-C accessories to help expand your computer functionality. To
purchase USB-C accessories, go to
https://www.lenovo.com/accessories.
Note: When the battery power is below 10%, the connected USB-C accessories
might not work correctly.
6 Lenovo ThinkBook series User Guide