The driver shows up as “cups + gutenprint” and as far i can tell there is no other. so i guess that is already the one and only available driver.
and i have to correct myself, it is a Canon, not a Brother. Canon MX300 from 2007.
I mean it is not that big of a deal anyway. there is a single Windows machine left in this household that i can use for print jobs. and yeah, maybe i could use it as print server, that is actually a interesting idea lol.