High-speed USB 2.0 interface > 24-bit/96kHz professional audio on all I/O simultaneously With reliable, low-latency M-Audio drivers and compatibility with most major recording software, the Fast Track Ultra 8R puts the core of your powerful project studio in a single rack-mount unit. Designed for comprehensive studio work, the Fast Track® Ultra 8R audio/MIDI interface delivers 8 x 8 I/O.