NVME M2 drives: which slot to use?

2 NVMe SSD's which slot to put OS on and does it matter? which m 2 slot to use This #short video quickly describes how to determine which slot is the best slot on a which slot game is easy to win Dell Optiplex 7010 no slot – use existing PCIe slot for NVMe SSD? Thread: Dell Optiplex 7010 no slot

which time slot works best for you It didn't work either I had to use the window setup from Windows itself, well all that did was format one of my SSD with all my stuff on it