I currently have an MSI Z170a gaming M7 motherboard with the OS on a Samsung 970 EVO 250GB (connected via the 1st M2 slot on the mobo) and 4 SATA SSD's + a couple of external mechanical hard drive connected via USB3. My question is, can I add a spare SM951 that I've got, via an add in card like the AKASA one in the bottom x4 PCIe slot (which I believe is connected via the chipset) without eating into the performance of anything else already connected? I've tried reading up about the distribution etc. of the PCIe lanes and have just managed to confuse myself. Just seems a shame to leave the old SM951 NVMe lying around not being used. Thanks in advance. PS. One final question. If I do use the SM951 in an adapter card, would it probably be better to replace the Samsung NVMe controller with the stock Windows 10 one? As I'm assuming they would both use the come controller. I only ask, as the SM951 is not a retail drive and I'm not sure if it's supported by the Samsung controller.