Lenovo ThinkVision T27hv-20 User Manual page 20

10. Connect one end of the USB cable to the USB downstream terminal of the monitor, and
11. Connect your USB device to the USB port on the monitor.
1-13 T27hv-20 Flat Panel Monitor User's Guide
connect the other end of the USB cable to an appropriate USB port on your device.
Note: The USB downstream port does not provide power while the monitor switch is
off.
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