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).
