I am trying to use CrossFire and my second Radeon RX 580 is not recognized by my motherboard (AsRock X470 Master SLI/AC.) Both cards are MSI Radeon RX 580s, and the CPU is the Ryzen 5 2400G. I currently have 16GB of Kingston HyperX Fury DDR4-3466 installed. I am using a 750W EVGA 750 G2 PSU. Both cards work fine in the top slot but I cannot get the motherboard to recognize either card in the bottom slot. Even if I use the card in the bottom slot and I remove the one in the top slot, I will not get any video output from the second card regardless of which one it is.