Small Size. Infinite Power. Go-FOC R200S Palm-sized: 118.7×91.5×38.2mm Peak Power: 35kW Dual-Channel (800A) Max Input: 96V (＜21S) Full CNC Aluminum Body | IP-Rated Weatherproof | ESD-Protected Signal Ports Applications: Electric Skateboards, Electric Go-Karts & Dual-Drive Systems Pocket-Sized Giant. Race Without Limits. R200S — Born for Racing！ Shipping list： Go-FOC R200S x 1 Copper lug x8 M6 cross combination screw x8 PH2.0MM JST cables TypeC USB cable x 1 16mm metal switch button x1 USB Port Selection Due to the limited space inside the controller, only one USB Type-C port is provided. After opening the USB cover, you will see a USB Type-C port and a small slide switch located directly below it. This switch is used to select which ESC the USB port is connected to. Slide the switch to the left → Connects to the Lower ESC (A2 / B2 / C2). Slide the switch to the right → Connects to the Upper ESC (A1 / B1 / C1). Note: Only one ESC can be connected to the USB port at a time. To use this module, you should have some knowledge of electronics; if not, be cautious when buying it.