QWinOut 1Piece Mini Power Hub Power Distribution Board PDB with BEC 5V & 12V for FPV 250 ZMR250 Multicopter Quadcopter 5V & 12V Output LED indicators & Short circuit tolerant 4 ESC outputs Designed for RC Receivers, Flight controllers, OSD, and Servos Dimensions: 36 x 36mm Mounting holes 30.5mm square spacing