GoKawiilWhy some monitors need a separate USB cable for their hub ports to work
Monitors with built-in USB hubs use two types of ports: an upstream port that links the monitor to a computer, and downstream ports where peripherals like keyboards or drives connect. If a monitor's video signal runs over HDMI or DisplayPort, those cables don't carry USB data, so a separate USB upstream cable is required for the hub's downstream ports to function. USB-C can eliminate that extra cable when the monitor and cable support DisplayPort Alt Mode and USB Power Delivery.