I'm curious if they've made it compatible with PCIe gen 4 with a firmware upgrade. Little odd to be coming out with a PCIe gen3 product when the gen 4 was ratified last summer.
What would be the point? It's going to be a good while before PCIe 4.0 is a significant market for consumer products. Samsung will likely be on to another product generation by that time. They'll probably want a good spread of engineering samples from motherboard makers to test with before launching PCIe 4.0 products.
There's also the practice of minimizing the number of new technologies implemented in a single product to avoid problems. I recall a GPU maker who got badly bitten when they tried to combine a new architecture launch with a process node shrink. It went badly and gave their rival the market lead for a year or so. The rival had chosen to do their new architecture on the node they already knew well, even though it meant a BIG chip. It turned out to be the better choice.
Sorry, but i'm a bit of noob. That means: any ssd i put there (if i swap them is useless i guess) will have half of the listed speeds from specifications?
So the ssd is ok but the mobo slot doesn't allow him it to run full mode?!
Is there a mobo for Ryzen 7 which to have 2 * M.2 slots that to run in full mode?
I don't know of any Ryzen mobo that has two M.2 slots that are both 3.0 x4 off the top of my head. You'd probably have to get an M.2 add in card adapter so you could put the SSD in a PCIe slot. But your graphic card would drop down to x8 from x16 in that case.