DNP-720SE, a network audio player pursuing high sound quality. - Model Name: DNP-720SE - Type: Network Audio Player - USB Port: USB/iPod 5V/1A - Connection Terminals: RCA, Ethernet, Power Connector Thank you for viewing. I was listening to music by playing it in the following ways: - Playing via Wi-Fi connection to the network - Playing mp3 files from a USB memory stick - Playing from iPhone via AirPlay It is no longer needed as I rarely use it. Although not shown in the photos, the power cable is also included.