This product requires a USB-C adapter to be used with a Mac that does not have USB. The adapter can also have additional features, such as HDMI, which allows for two screens to be used with a normal adapter that typically only supports one. If you have a MacBook with M1, either Pro or Air, that only supports one screen, this adapter can provide an additional screen connection. To use this adapter, you will need to download the driver for displaylink, which can be found on their website. It is important to note that this adapter runs on USB 3.0, which bypasses your Mac's normal video output. This means that your Mac's CPU and GPU will be used to create and compress the image, which may slow down your computer. However, if you have enough CPU and GPU power for your daily work, this should not be an issue.