A hardware wallet adds another layer of security to your digital assets, by using a physical device to securely store your wallet's keys. 

We support all hardware wallets offered by MetaMask, so you will need to ensure your hardware wallet is compatible and configured in your MetaMask wallet first.

You can find these steps and additional information in this MetaMask support article:

https://metamask.zendesk.com/hc/en-us/articles/4408552261275-Hardware-Wallet-Hub