Yes, it is compatible.
Yes, it is compatible.
Checking compatibility is the right step. Your 2060 Super should work on a motherboard rated for that GPU, but confirm the specifications match. You can review the board details at the link provided.
It works with any model that supports PCI-E Gen3. You mentioned you have one.
Yes, it seems that models below Gen3 might limit the performance of the RTX 2060, making Gen3 a more current choice for optimal results without extra costs for Gen4. If you already have a GTX card, replacing it with an RTX would be fine, though you may need to upgrade your power supply accordingly.