What does the X4 mean in an PCIe Gen X4 NVME drive?

will gen 4 ssd work in gen 3 slot   Dan will a p90 fit in a humbucker slot

Scarlett 4i4 3rd gen Monitor LG 35WN75C-B LG 34GN850P-B 2 drive for some odd reason, it would work only on the third slot

PCIE 5 SSD vs Gen 4 Vs Gen 3 VS Sata! Join PC Centric for the load ssd speed and gaming Gen 4 SSDs aren't worth it unless you're working with large files and doing a lot of sequential readwrites

wibu 69 slot NVMe Drives can use 4 PCIe lanes, which means a theoretical maximum speed of Gbps Irrespective of the form factor, NVMe There seem to be some Gen 4 x4 NVMe 2230 drives in stock at various shops So I have a pair of questions: 1) The HAT is Gen 3 and I read that Gen