ioSafe SoloPRO eSATA/USB 2.0 - Manual (Page 11)

11
About USB 2.0
USB 2.0 has a maximum interface transfer rate, or bandwidth, of 480 Mbps
(Megabits per second). The performance depends on many factors including:
CPU, file system overhead, number of attached USB devices and more. Given
these and other factors, in day-to-day use you can expect maximum,
sustained transfer rates around 25 MB/s (Megabytes per second). USB 2.0 is
backwards compatible with USB 1.1. This means you can connect a USB 2.0
device to USB 1.1 port, and vice versa. However, interface transfer rates are
limited by the interface with the lower speed. If you plug the SoloPRO into a
USB 1.1 port on your computer, data transfer rates will be limited to USB 1.1
speeds (up to 12 Mbps).