Here’s the deal with this one. When I plug into my laptop it doesn’t recognize the unit for some reason BUT the unit still works when it’s on the bike. I’m assuming it’s a problem with the port. The sensor is push on this one and this was a spare so it didn’t see any use by me. Quick shifter works as it should so essentially this is a quick shifter only unless the map on it works for you. I’m not sure what’s on there bc I can’t see it. Priced to sell quick. $149 shipped in the 48 Sent from my iPhone using Tapatalk