The USB ASIO driver connects even more external soundcards with a number of audio applications and virtual instruments at latencies so low you can't feel them any longer: down to 4ms according to the company. It's main advantage is a dramatic increase in performance meaning that more of the computer's CPU power can be used for what it's meant for: Sound generation and effect processing.
The driver's available for Windows 98/SE/ME/2000/XP and Mac OS 9 (Mac OS X expected early 2003). A number of companies decided to license and bundle this driver to their hardware, so the driver is available for free to the following devices: Aardvark USB3, Apogee MiniME, Ego-Sys U2A / U24, Ego-Sys Gigaport AG & DG, Sound Devices USB pre, Swissonic USB Studio (D), Media-Assistance USB One and Yamaha UW500.
Propagamma also sells this driver for users of other audio interfaces.This commercial driver supports Audiotrak Maya 7.1 USB, Audiotrak OPTOPlay, Creative Extigy, Digidesign Mbox, Edirol UA-1A, Edirol UA-3, Edirol UA-3D, Griffin's iMic, Opcode DAT-/SonicPort, Onkyo MSE-U33(HB), Onkyo SE-U55, Onkyo SE-U55S(X) and Roland-ED UA-30. The price of the USB ASIO driver is EUR 60, about US$60. A Windows demo version is available.