Input Voltage: DC 6~21V converted to 5V 4A via step-down DC/DC converter to power the Raspberry Pi. - Storage: SATA port allows you to connect SATA devices to your Raspberry Pi. - Audio: 3.5mm MIC in jack 3.5mm stereo audio jack SPDIF output audio IO connector (Microphone input and stereo audio amplifier 3.3 x 2W) - Wireless: Wi-Fi (IEEE 802.11b/g/n) with antenna IR sensor (38KHz) - USB: self-powered USB hub with 3 ports - RTC: Based on DS3231SN with included CR2032 battery - I/Os: Power output connector headers to access camera connector on top of the Raspberry Pi - Misc: DIP switch to remove connection from RPi's pin header - Dimensions: 85 x 56mm (Same size as Raspberry Pi)