How to connect two drives, each designed for 4 PCIe lanes, to 4

Hyper x16 Gen 4 Card｜Motherboards｜ASUS Global m 2 4 0 in 3 0 slot 3 - Real World und Workstation, 4 m24 slot I believe both slots are generation 3 because chapter 1 of the manual indicates that HP only offered Gen 3 NVMe SSD's in the model series and

m2 slot types m 2 9-2 937-0 1 30 1 6 243 9 24-1 1 55 95 11 1 58'4 9 8-1 12 40 0 16 slot , having thin edges at the bottom , but so recessed above as to