Using this magnetic card reader is a breeze. First, connect it to your computer. You can use a DB9 port for serial connection and a PS/2 for power. If your computer doesn't have a serial port, you can use a USB - to - serial converter. Once connected, just swipe your card over the reader. You'll immediately see the account number on your screen. There's no need to install any drivers or software. As for maintenance, keep it clean and free from dust. Avoid exposing it to extreme temperatures or moisture. And that's all you need to know to make the most of your magnetic card reader.