Key benefits Fixes incorrect speed and distance readings by correcting wheel-diameter settings so your display shows precise, reliable data. Simple plug-and-play connection lets you calibrate the bike in minutes — no special tools or training required. Broad CAN-protocol compatibility covers many common motor models, so one cable works across multiple e-bikes and displays. Why you need this If your speedometer or range estimates are wrong after changing tire size or swapping wheels, this adapter lets you quickly match the display to the actual wheel diameter so readings are accurate. Ideal for shops, fleet managers, and riders who need consistent, verifiable speed and distance data for maintenance, diagnostics, or logging. What makes it stand out Direct USB interface: connect the cable between motor and display, plug the USB end into a computer or compatible screen, and make adjustments quickly. Built for CAN-protocol motors including m400/g330, m500/g520, m510/g522, m600/g521, m620/g510, m420/g332, m800/g530, and other compatible models — no guesswork about compatibility. Multiple preset wheel diameters (29", 27.5", 26", 20") let you tailor the display to the exact wheel you’re running. Key features Function: Calibrate wheel diameter settings to correct speed and distance readings. Interface: Connects motor and display; USB plug for computer or display access. Compatibility: Designed for CAN-protocol motor models listed above and similar motors. Performance: Restores accurate speed and distance reporting for safer, more reliable rides. Typical use scenarios 1) Rider after a wheel swap: Replace a 29" tire with a 27.5" and quickly update the display so speed and range calculations are correct during your next ride. 2) Bike shop setup: Prepare customer bikes by calibrating the display to the installed wheel diameter before delivery, eliminating follow-up adjustments. 3) Diagnostic or fleet maintenance: Connect to a computer or service screen to verify and correct speed-readout issues across multiple bikes quickly. How to use 1) Connect the cable between your motor and display. 2) Plug the USB end into your computer or compatible screen. 3) Select the correct wheel diameter (29", 27.5", 26", or 20") and apply the setting. 4) Confirm accurate speed and distance readings on the display. Compatibility reminder Works with CAN-protocol motors such as m400/g330, m500/g520, m510/g522, m600/g521, m620/g510, m420/g332, m800/g530, and other compatible models. Use with displays and computers/screens that accept the cable’s USB interface. This cable provides a straightforward, reliable way to correct speed and distance errors caused by incorrect wheel diameter settings, improving the accuracy and usability of your e-bike display.