This Official Raspberry Pi USB-B to USB-C adapter enables you to connect USB-B devices to the USB-C port on your Raspberry Pi 4 board. So you can continue to use your standard micro-USB power supply cable. Please note, the Pi 4 board requires a 5.1V/3A PSU. You can also use this USB-C adapter to connect other older peripherals to your new board. This includes, keyboards, mice and printers. • Female USB-B to Male USB-C adapter• Compatible with Raspberry Pi 4 Model B (all variants)• Carry on using your USB-B devicesVersions Available:188-2074 - White Adapter187-5394 - Black AdapterRaspberry Pi Adapters & Cables