Asus ProArt Display PA278QV 27" 16:9 Adaptive-Sync IPS Monitor - Manual (Page 18)

2-4 Chapter 2: Setup
» Downstream: Plug the USB Type-A cable of your device to the monitor's
USB Type-A jack.
When these cables are connected, you can choose the desired signal
from the Input Select item in the OSD menu.
2.5 Turning on the monitor
Press the power button . See page 1-2 for the location of the power button. The
power indicator lights up in white to show that the monitor is ON.