pcie 3.0 x16

Hi everyone, I built my PC in february 2021 with a ryzen 5 2600 (CPU), Gigabyte GeForce GTX 1050 Ti Windforce OC 4G (GPU) and ASUS ROG Strix B450-F Gaming (mobo). I want to upgrade to a (2nd hand) ASUS ROG Strix RX 5500 XT 8G GAMING OC as it offers better performance, and because I want to...

I have an expansion card M.2 NVME to PCIe Adapter (3.0 x4) and will put an M.2 NVME SSD into it. What I plan on doing is to put this expansion card adapter into the second PCIe 3.0 x16_2 since I have a GPU with a PCIe 3.0 x16 interface currently in place at PCIe 3.0 x16_1 slot. Since the...