What kind of USB ports are these? Noriko July 11, 2018 08:49 Updated Follow A. These are USB 3.0 up to 5Gbps. Related articles Will this attach to all Mac computers? Quick Guide How long is the cable from the back of the clamp to the computer? Can you connect and read external hard drives and phones? Will this device be available in different color-ways? Comments 0 comments Please sign in to leave a comment.