Old hardware device with non upgradable memory and only a SATA interface? Like old game consoles. I have something myself that is in the ballpark. It's e-ink T

Old hardware device with non upgradable memory and only a SATA interface? Like old game consoles. I have something myself that is in the ballpark. It's e-ink Thinkpad that has 4GB of soldered memory. It would be plenty fast if only it had more memory. They don't make a newer e-ink laptop like this. It's not SATA but if there was a way to stick a 32GB DDR4 memory stick onto an NVME drive, use it in the second slot as a pure swapfile, that would be a cool little trick to extend the lifespan of this thing. I might try this with Optane if the prices come down more.