View and Download Citronic PRO-3:USB owner's manual online. Professional DJ Mixer. PRO-3:USB music mixer Page 7 NOTE:(1)USB cable limit within 3 meter. We have prepared this manual to provide comprehensive technical There can be multiple Customer files on 1 USB if installed onto multiple printers.Page 1. MPSD - 1. USB And Dual SD Card MP3 Player · Page 2. IMPORTANT SAFETY INSTRUCTIONS Please read these instructions carefully · Page 3. MAIN FEATURES Auto