Apple has finally released a Thunderbolt cable today with a nice price tag to match it at $49. What's it good for you ask? How about blazing fast data transfer speeds of 10Gbps. There's not much you can use this Thunderbolt cable for right now. There are very few devices and peripherals that support this technology at the moment, but you can use it to connect your Thunderbolt-equipped MacBook Pro with your iMac and use it as an external display.