"The Cornice drive is essentially a minimalist hard drive that has been shorn of any materials not needed for portable electronics. The drive, for instance, doesn't have its own internal, dedicated pool of memory; instead, it uses the memory shared by the rest of the device to cache data. The SE doesn't have rails, so it can't be removed from the host device; by contrast, the drive is planted on the motherboard, and transfers of files are accomplished through USB (universal serial bus) ports. "