A:AnswerThis device is compatible with any PCIe x1/x16 slot. Please note that this product is intended for systems running Windows. For specific driver support, please consult the driver download page here. https://www.asus.com/us/Networking-IoT-Servers/Adapters/All-series/PCEAC56/HelpDesk_Download/
A:AnswerMine can find it just fine. It may be something to do with your internet. I would go into your internet settings via browser and see if the channels are combined. If you don't see the 5g name of your WiFi anywhere, it's because they combine the channel and it just puts devices on the band that suits it most. You can split it though to see the 5g. You'll have to do some research on how to do that though.