Look at the size of the motherboard chipset's heatsink:https://www.asus.com/motherboards-components/motherboards/tuf-gaming/tuf-gaming-b760m-plus-wifi/ I'm planning to use the bottom PCIE x4 (lanes from B760 chipset) for Radeon 550.  Do you think th...

It has 2 PCIEX16 in black color.  One of them is x4. Anyone knows which one is the x4?