Question: what is the difference between usb 3 gen 1 and gen 2?
Answer: USB 3.1 Gen 1, originally known as USB 3.0, is capable of 5 Gbps transfer speeds—that's called SuperSpeed. USB 3.1 Gen 2 is capable of 10 Gbps transfer speeds—that's called SuperSpeed+. Technically, it accomplishes this by using 128b/132b encoding in a full-duplex communications mode.