The UDC-25 from Roland is a USB-to-DC power supply cable designed specifically to supply power from a computer to the company's R-05 WAVE/MP3 Recorder and VT-12 Vocal Trainer.
-For R-05 WAVE/MP3 Recorder and VT-12 Vocal Trainer
|| 1 x USB Type A to DC Power Connector
|| 8.2' (2.5 m)
|| 0.15 lb
|| (LxWxH) 7 x 4 x 0.8"