It doesn’t take many downloads to fill up modern Macbooks, but external hard drives can be a pain to transport. TarDisk fixes this by adding 64GB of storage via the SD port. Right now, 9to5Toys Specials has this tiny drive for $100 shipped.

Once inserted, TarDisk is virtually invisible. It fits squarely in the SD card slot, and its aluminum unibody casing blends seamlessly with your Mac. The drive is specifically designed with the Macbook Air in mind, so you simply plug it in to start enjoying your extra storage space.

TarDisk utilizes the UHS-1 SDXC protocol to provide transfer speeds upwards of Class 3. In other words, it’s super fast–allowing you to enjoy the compactness of a memory card with the power of a full-fledged drive. You can even troubleshoot issues directly through Apple Care, as well as easily use the drive with all Mac apps.

The current deal takes 32% off the original price for the TarDisk, with free shipping included.