THESE ARE USED TOSHIBA 256GB M.2 SATA 2280 FORM FACTOR SOLID STATE HARD DRIVE (SSD). EACH DRIVE HAS BEEN TESTED WITH DELL DIAGNSTIC SOFTWARE AND SECURLY WIPED. PLEASE MAKE SURE YOUR COMPUTER SUPORTS THIS TYPE OF SSD BEFORE BIDDING.  I ONLY SHIP TO THE USA. THANKS FOR LQQKING!