Features: For driving DDSM series hub motors: DDSM115, DDSM210 Support 4-channel DDSM115 motor interfaces, 4-channel DDSM210 motor interfaces Supports a variety of corded and wireless communication method, supports JSON command interaction, convenient for host computer control Supports installation Integrated 5V regulator circuit for power supply, communication through GPIO serial port, reduce wiring complexity Integrated application for controlling and setting up DDSM hub motors for easy debugging Direct communication with DDSM hub motors via usb C interfaces Specifications: Size:about 85x57mm/3.34x2.24in For Driving DDSM Series Motor Board Support：4-channel DDSM115, DDSM210 Package Includes: 1Set Direct Drive Servo Motor Driver Board note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before order. Due to the differences between different monitors, the picture may not reflect the actual color.