That is correct, usb1 hardware (99% of the time) is compatible with usb2 ports. Meaning you can plug any usb1 device into a usb2 port and it will work just dandy.
Usb1 speed is 12mb, usb2 is 480mb. If you have a usb1 system ONLY all usb devices will be sharing that 12mb together, they dont have 12 each device which I guess would cause problems when using the TI at its full sound output capacity with other usb devices.
Its not to clear on the access website at all, but basically the TI is usb1 spec and speed but will work in usb2 slots. I personally would of liked them to put a higher price on the TI, spend more time working on it and have at least 8 outputs (preferably 16) using usb2 speeds instead of the 3 outputs we are going to have now........ ah well, maybe for TI-2
ten