Feature: 1. Simplified Wiring: C type expansion board specially designed for micro:bit development boards, which facilitates the wiring of for micro:bit development boards and builds projects more conveniently and quickly. 2. Featured Interfaces: Equipped with one 3.5mm sound socket and one micro USB female socket to meet the needs of sound output and device power supply, improving system expandability. 3. Clear Pinout: The for micro:bit motherboard's function pins are separated by connectors, which makes each pinout clearer, easier to operate and reduces the possibility of errors. 4. Flexible Voltage Adjustment: The operating voltage range is DC 3.3~5.5V, and the voltage on the board can be controlled by the jumper covers, which can flexibly respond to the needs of various modules. 5. Micro USB Power Supply: Power can be supplied through the Micro USB holder on the board, which is compatible with most of the mobile power supply and computer USB interface, convenient power supply and more extensive use of the scene. Specification: Item Type: for Microbit C Type Expansion Board Material: PCB Working Voltage: DC 3.3~5.5V Voltage Can Be Controlled on the Board Through Jumper Covers Power Can Be Supplied Through the Micro USB Holder on the Board. Package List: 1 x for Microbit C Type Expansion Board