I recently installed a pcie 4.0 x1 adapter for an extra SSD, solely for extra storage (games and such). The SSD used to show on a USB enclosure, and worked fine. Now it does not show anywhere on device manager, windows storage settings, disk management etc. The green light is on and I have tried to refit the adapter multiple times. My motherboard is an ASUS Prime a520mk if that's of any use. The only BIOS setting I can see about PCIE is the generation of the ports, which I have changed to the max available (3.0). I am not sure if I have missed any steps, I can't find anything other than it should just appear on device manager after plugging it in, and obviously it doesn't.
The adapter:
The SSD:
uk.crucial.com
The motherboard: https://www.asus.com/uk/motherboards-components/motherboards/prime/prime-a520m-k/
The adapter:
The SSD:

Crucial P3 Plus 1TB PCIe M.2 2280 SSD | CT1000P3PSSD8 | Crucial UK
Buy Crucial P3 Plus 1TB PCIe M.2 2280 SSD CT1000P3PSSD8.

The motherboard: https://www.asus.com/uk/motherboards-components/motherboards/prime/prime-a520m-k/
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