Roland DUO-CAPTURE Audio Interface Requires a USB 2.0 PC. I haven't installed the drivers on my new PC, and while it's recognized, I've only confirmed the message "Please apply the driver." Since I haven't been able to check its recent operation, please consider it as a junk item. Returns are not accepted. Please purchase if you are knowledgeable. Powered by USB only. Simple operation, can be used for analog input (mono, stereo) and simple recording.