The SDAR-4 Equalized & Reclocked 3G Distribution Amplifier by Osprey Video is USB Powered SDI distribution powered with USB. The SDAR-4SDI Distribution will automatically detect the input signal and accept any single link SDI input up to 3G and passes it thru to four outputs while preserving Embedded Audio and Ancillary Data. The amplifier has automatic cable equalization to lessen attenuation over longer runs. Powered by USB, you can use Battery Power Pack to power this device.