bandwidth - Disable RGB Camera from Asus Xtion -

i have asus xtion pro live, , want reduce usb bandwidth requirement down 70+% down. noticed there option reduce requirement down if can disable rgb camera. know how this? (e.g. firmware update etc?)

i have received official answer primesense best solution buy asus xtion without rgb camera. , believe usb3.0 pci-e expansion card solution now.