I have an old Dell XPS laptop that I have kept for the sole purpose of running SpinRite because it boots from BIOS and also has an eSATA port. I have 2 external HDD docks that I can use. One of them is an old eSATA dock that registers as a SATA I according to SpinRite. The other is a new USB 3.1 (5Gbps) that shouldn't be a problem connecting to my laptop's USB 3.0 port. Which one should I use, the one that is a native SATA connection albeit slower or the faster USB that may not get down to bare metal?
