SABRENT NVMe SSD to PCIe X16X8X4 Card

So 5-6 SATA drives can potentially over-saturate that PCIe slot, but in real-life I doubt you'd ever actually do so You could run the 850

Have you ever thought if you can plug PCI Express cards into x16 lane slot? In this video

can you play slot machines at 18 Yes, a PCIe x4 card will function in a PCIe x16 slot The slot will simply use 4 of the 16 lanes available, and the card will work properly

can casinos rig slot machines if the slot is open like that, you should be good to go if it's not open, you could a) use another riser to adapt the x8 to x16, or b