* 1GB = 1,000,000,000 bytes. Actual user storage less. 1 Read speeds up to 420MB/s, write speeds up to 380MB/s. USB 3.1 Gen 1 or USB 3.0 port required. Based on internal testing performance may be lower depending upon host device. 1MB = 1,000,000 bytes. 2 Based on 4K video transfer (4GB) with USB 3.1, Gen 1 or USB 3.0 host device.