This is the RS-485 communication 4P cable set for Dynamixel X-series. New style JST connector is applied on one side of the cable while old style Molex connector is applied on the other side. This cable is used when connecting Dynamixel X-series to other controllers with Molex connectors or USB2Dynamixel. Compatible with Dynamixel XM430 and OpenCM485 expansion board or connecting with USB2 Dynamixel.