[lantry]

They have "expansion cards" which fit flush in the body of the laptop. One of the available expansion cards is an SSD (comes in various sizes)

https://frame.work/products/storage-expansion-card-2nd-gen?v...

[Joeboy]

Thank you, that does look interesting! I haven't really considered the Frameworks so far because of my secondhand Thinkpad habit, but I do like the idea so I should probably think more seriously about it.

[3np]

I bet if you're handy it should be possible to repurpose an optical slot in an old Thinkpad for those.