1. You can apply for a patent for a video that you think is very distinctive. There are three types of patents (invention, utility model, and design). Accessories can be protected through design (i.e., some pictures of the accessory, Relatively simple and agency fees are lower).
2. Brand protection can be achieved by applying for a trademark. What is protected at this time is the entire brand, such as IBM and HP. Other brands cannot use these brands when selling computers. But this cannot protect individual accessories.
3. If you feel it is necessary, you can apply for both at the same time to achieve a more comprehensive protection effect.
Hope it helps.