Dell Force10 S4820T switch

I'm looking for help.
I bought a Dell Force10 S4820T switch at an auction. It boots up fine, but it has a password I don't recognize. I see it has an old firmware version, FTOS 8.3.19.0. I've searched several websites to find out how to remove the password. I've seen several, but they all mention a higher FTOS version, 9 or 10. Because of this, I can't remove the password. Is there any way to help me with this? I'm not a company. I'm just a regular citizen interested in the switch.

Thanks Marlon