[1] 32 GB, 64 GB, 128 GB. Write to drive up to 15x faster than standard USB 2.0 drives (4MB/s); up to 150 MB/s read speed. USB 3.0 port required. Based on internal testing; performance may be lower depending on host device. 1 MB=1,000,000 bytes. 16 GB. Read speed up to 130 MB/s; write speeds lower, vary by capacity. USB 3.0 port required. Based on internal testing; performance may be lower depending on host device. 1 MB=1,000,000 bytes.[2] Based on 1.2GB MPEG-4 video transfer with USB 3.0 host device. Results may vary based on host device, file attributes and other factors.[3] 1 GB = 1,000,000,000 bytes. Actual user storage less.[4] Password protection uses 128-bit AES encryption and is supported by Windows Vista, Windows 7, Windows 8, Windows 10,and Mac OS X 10.6+ (Software download required for Mac, see manufacturer’s website for details)