Make sure your PC supports USB4 to get the best experience from the attached USB4 device or dock. Make sure the USB4 device you're connecting to is supported by your PC. MHL device functionality might be limited Thunderbolt device functionality might be limited USB device functionality might be limited USB4 device functionality might be limited Here are some USB-C notifications you might receive if there’s a problem: Note: If you're having trouble downloading photos, see Import photos and videos from phone to PC.