On the following link you will find all the drivers for your board, including the USB drivers:
Please try those drivers and also try a BIOS update on the board to the latest version, if you need assistance doing the BIOS update just get in contact directly with ASUS:
ASUS support site: https://www.asus.com/us/support/
ASUS phone number: 1-877-339-2787
Please let me know the results of installing the drivers above.
Any questions, please let me know.