Not all cryptocurrencies are natively supported by Ledger or Trezor, you can find out which assets are supported below:
ERC-20 tokens sit on the Ethereum network—you can send it to your ETH address and interact with them or see your balance once connected to a compatible wallet or explorer.
For example, you can connect your hardware wallet to MyEtherWallet or MyCrypto and interact with all your ERC-20 tokens. Ledger Live does not have native support for all ERC-20 tokens.
Tip: You can also enter your Ethereum address into a block explorer such as Etherscan and selected the ‘Token’ dropdown bar and see the balance of all ERC-20 tokens on the address.