Using this adapter is easy. Just plug one end of the adapter into your micro B cable and the other end into a device with a USB C port. You can use it with various devices, like the Raspberry Pi 4, to keep using your existing 2.5A 5V power plugs. Here are some things to keep in mind. If your device has a USB 2.x port, don't expect USB C speeds. Also, since your computer doesn't have the power negotiation feature built - in, this adapter won't offer that function. It's only for devices that use 5V and up to 2.5A. To maintain this adapter, keep it in a dry place and avoid bending or pulling the cables too hard. When not in use, store it safely to prevent damage.