How to integrate RSA token( or Hardware token) with keycloak login page

Can we use an RSA token with keycloak login page ?
if any possibilities on how to integrate it with keycloak, any example please?

Do you mean this demo:

the link is broken, is there another demo please, i try to find a way to add one more security layer by adding a hardware usb token to keycloak

Not sure if an RSA token and a USB token are the same thing. If you mean a token that supports W3C Web Authentication (WebAuthn), here are the docs: Server Administration Guide