you do know in testing you can only squeeze 35 to 60 mb/sec though usb2 interface and get full hard drive speed at usb3. Most tb or bigger drives get around 100mb/sec or more on usb 3.
What Is the Transfer Speed of USB 3.0?The theoretical transfer speed of USB 3.0 (or maximum bandwidth rate) is 5Gbps (gigabits per second). This speed translates into 640 MBps (megabytes per second), which is theoretically ten times faster than USB 2.0.
However, these values are theoretical, and they’re not fixed. There may be differences when measuring the actual data transfer time from a computer to an external hard drive or peripheral and vice versa. Sometimes the figures can be higher or lower than the theoretical value.
For example, the sustained (real-life) transfer speeds for external hard drives are around 85MBps for USB 3.0 and 22MBps for USB 2.0, which indicates about a 4 times improvement.