Usb 3.0 Hdd Transfer Speed. The bandwidth of sata 3 is 6 gbs but the bandwidth practically supported is 600 1000mbsec depending on chipset. A bit of trivia.
Since even though the data could be transferred at that rate it cannot be read off the source hdd or written to the external drive at the same rate. Usb 30 wikipedia serial ata wikipedia. I myself am using a usb 3 enclosure icy box ib 112stu3 b to be exact for my 5400 rpm hard drives.
Similarly for usb 30 is 5 gbs.
A usb 30 drive should be getting write speeds of at least 1520 mb per second if not more. Speeds from external ssd sandisk extreme 500 on usb 30. 480 mbits 60mbps which is a 10x improvement. Easy installation just connect usb splitter charger to your pc or notebook and its ready to be used specifications of 7 port hub usb ports.