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 devices
Versions Available:
188-2074 - White Adapter
187-5394 - Black Adapter