No, the USB-C to HDMI 2.1 8K Adapter is not bidirectional. The USB-C to HDMI 2.1 8K Adapter only sends video from a USB-C device to an HDMI display.

1. Connect the USB-C end of the USB-C to HDMI 2.1 8K Adapter to your computer or other USB-C device.
2. Connect an HDMI cable from the USB-C to HDMI 2.1 8K Adapter to your monitor, TV, or display.
3. Switch the display input to HDMI.

Your USB-C device must support DisplayPort over USB-C. The USB-C to HDMI 2.1 8K Adapter cannot take an HDMI source and send it to a USB-C display.