What ways do forum moderator use to identify banned users?

I know they check IP addresses, can tell if you're a proxy user.

But lets say I change my IP address, changed my laptop, internet browser, and signed up using a different username. Will they still be able to identify me?

us vpn

VPN is (Virtual Private Network) were first used by companies to enable their employees to securely access internal systems such as email remotely (e.g. from home or while on business trips). Today they are increasingly being used for personal use by individuals to protect their privacy while online in public places (e.g. when using the wi-fi connection in a cafe) or in a country where the internet is censored / blocked (e.g. China, Saudi Arabia…).