USB PowerControl board - USB to USB solid state relay for Raspberry Pi and Arduinos Can Switch the Power to any USB device plugged into the Female A USB port On/Off Controlled by a single control line Implements Hysteresis on Control - 3.8V/3.3V Turn On/Off Voltage on Control Line. Can be connected to GPIO Pin or directly to LiPo Battery Over Current Protection, Thermal Shutdown, Reverse Current Blocking Full Documentation and Software for Raspberry Pi and Arduino on www.switchdoc.com