SanDisk 250GB Extreme Portable External SSD - Up to 550MB/s - USB-C, USB 3.1 - SDSSDE60-250G-G25 (Like New, Open Box)High speed transfers with up to 550MB s read speeds let you move hi res photos and videos fast (Based on internal testing; performance may be lower depending on drive capacity, host device, OS and application.) Ruggedized, water and dust resistant (IP55 rated) (IEC 60529 IP55: Tested to withstand water flow (30 kPa) at 3 min.; limited dust contact does not interfere with operation. Must be clean and dry before use.) Shock resistant solid state core