128GB USB 3.0 Flash Drive DataFortress 100MB/S High Read Speed Flash Disk, Portable USB Memory Stick for Windows 10, 8, 7, XP, Vista & Apple Macbook etc Super Speed USB 3.0 flash drive, backwards compatible with USB 2.0; Average 100MB/s Read Speed & 60MB/s write speed; Backup large files from your computer to USB drive in seconds,10 times faster than USB 2.0. Get the most out of your new laptop or tablet interfaces Enjoy more lossless music and HD photos with large capacity memory stick Reliable alloy made thumb drive that is water, dust, and shock proof.Bring it to anywhere with ease All pomarks products are backed up with 1 year warranty & life time friendly customer service - You are welcom to ask questions on product page, our technical will answer you as soon as we can. - Item come in safe and compact packing. - 1GB=1,000,000,000 bytes. Actual user storage less.