If you have lots of files, big videos, or just want to back up your files over the fastest transfer port, Western Digital has a couple of new hard drives aimed squarely at you.

The company’s first external drive to support Intel’s Thunderbolt port, the Western Digital My Book Thunderbolt Duo packs two drives into a large external hard drive solution and a connection to Thunderbolt-enabled computers.

The drive features two Thunderbolt ports on the back, too: one for connecting to the computer, and another to add other Thunderbolt devices in a daisy chain, meaning you can use other high-speed Thunderbolt-enabled hard drives, sound cards, video editing decks, and monitors.

Mac users are currently the only ones with support for the high-speed Thunderbolt transfer port, but that’s set to change with the availability of the first Windows PCs supporting the Intel developed technology in April.

The new My Book drive is available in two versions, each likely bigger than the drive your laptop is packing, with a 4TB version for $700 and a 6TB model running at $900 RRP, each with a three year warranty.