How to tell what version of PCI Express slot your system has?

Hello everyone, With the latest GPUs' being gen 4 and because 11th gen Intel laptops could have a gen 4x4 slot would the ADT-Link R43SG

Anything A pcie 4 x1 slot is a whole lot of bandwidth and could be used for any pcie card with minimal real world bottleneck GPUs would be

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