Does anyone know such a device, but for a CUPS/SANE server? It would allow tou to secure a printer/scanner (which often use out-of-date software stacks). I'm currently using a RPi for this, but require partly to use qemu to run this to emulate a x86-64 binary (Brother driver). How did we end up with this mess. TVs and STBs are same story.
How old is your Brother? Mine's 8 years old and it can print/scan without needing to download any drivers (using IPP/eSCL). I was surprised when I set it up for the first time, because it took me like literally three clicks via KDE's Settings applet, never have I ever had such an easier time setting up an MFP on any OS.
The laserprinter was a terrible purchase, since new toners aren't much cloned yet, and superexpensive.