Michael Stone <mst...@debian.org> writes: > As a general matter PCIe devices can/will downgrade...
Thanks for the comprehensive reply. Indeed, those single drive adapters are dirt cheap so that's a "why not" buy. It turns out I actually have a free x4 slot and dual SSD adapters using ASM2812 bridges seem pretty cheap on eBay and Aliexpress, around 60 euros and free shipping. I have no idea if they'd work on my basic consumer motherboard (Asrock B550 Extreme4) but I guess I'll give one of those a try. Quad adapters seem to be rarer and more than twice the price. I have another computer with a free x16 slot but the chipset has no bifurcation support so the common quad SSD boards from Asus for example are out of the question.
