Firewire is the recommended connection between a digital camcorder and computer. It may be slower in terms of data transfer than USB 2 but it has more benefits than what USB 2 can offer. It also transfers sound aswell. So you will need a Firewire card and a four pin to six pin connector, assuming it is a small connector on the Sony (I haven't used that model) and the firewire card will have the larger six pin connector.

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