Grace Digital Message and Music on Hold USB Digital MP3 Player, Silver (GDI-USBM10) Plug and play -The included USB drive is preloaded with 6 hours of royalty - free music and standard thank you for holding messages Auto play after power loss. The GDI-USBM10 automatically starts playing after power is restored Built-in speaker - Monitor the audio on the device directly via the built-in speaker Industrial strength- High quality metal enclosure and electronics for the demanding business environment. Place on a shelf or easily mount to any surface Connectivity- RCA mono audio output with 8 / 600 ohm switch for optimal sound to your phone system Auto Play Automatically Starts Playing After Power Is Restored. Use the included cable to plug the Music on Hold player into your phone systems audio input jacked (usual marked music on hold)insert the USB drive and youre up and running Includes - Free Grace Music master software for PC (Windows 7, Vista, XP), 512 MG USB thumb drive preloaded with 6 hours of royalty-free music, rca cables, mini connector, power adapter and manual included power adapter - 110 / 220 VAC - 9VDC @ 500mA AC