Please can you advise what USB cable the pulse is - I need to buy a longer one. USB 2.0 A Male to Mini B 5 pin Data Cable Lead black 50cm, 1m, 1.8m, 3m, 5m Lengths (0.5m) Penny Yu May 18, 2018 03:32 Follow Correct. USB is limited to 2m by design, but we are not sure how reliable the longer cables are. Have more questions? Submit a request 0 Comments Please sign in to leave a comment.