The ADS A/V Link is a composite/svideo/stereo RCA to 6pin firewire/DV converter for Mac and PC. It accepts analog video as an input and will also convert an outgoing DV signal to analog. The device sports a 4pin DV connector on the front and will act as a passthough for the DV signal. There is a switch on the front to select between DV and analog and power switch on the back. The box has 4 jumper pins for fine-tuning it's behaviour.