The technology inside Apple's $50 Thunderbolt cable

The first Thunderbolt compatible peripherals—Promise's Pegasus RAIDs—started shipping on Tuesday. Using the RAIDs with a Thunderbolt equipped Mac, though, requires a rather expensive $50 cable that is only available from Apple. We dug into the design of the cable to find out why Apple felt justified in charging $50 for some plastic-wrapped copper wire, and why Thunderbolt may have a hard time gaining traction outside of the higher-end storage and video device market—a fate similar to Apple's FireWire.

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