. Smaller than your average SSD the 1TB Expansion USB (Universal Serial Bus) 3.0 External SSD from Seagate can fit almost anywhere & has a storage capacity of up to 1TB which is enough for a library of photos videos & more. When paired with its USB (Universal Serial Bus) 3.0 interface which is also known as USB (Universal Serial Bus) 3.1 Gen 1 or USB (Universal Serial Bus) 3.1 Gen 2 the Expansion SSD delivers data transfers speeds of up to 400 MB/s. It is formatted as ex FAT meaning it will work with both Windows 7 & later as well as mac OS 10.12 & later without the need for a reformat. However a reformat may be required for use with Apple's Time Machine. Included is a USB (Universal Serial Bus) 3.0 cable. General Features A Little Speed All You Need Fast & small the Expansion SSD slips in your bag practically unnoticed delivering sleek & easy external solid-state backup for your laptop. Just drag drop & you're done. Go Small Go Anywhere Go big or go home doesn't apply when toting around your files. After all you've got places to go. This drive is smaller than your average external SSD so that you can fit it almost anywhere & has enough storage for a library of photos videos & more.A Portable SSD for Photos & Videos Busy days demand reliable durability. Not only is the Expansion SSD ready it's boosted by solid-state performance reaching up to 400 MB/s for seamless video streaming from your drive to your laptop & quick photo transfers..