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How many M.2 slots are available on this motherboard? Some of us have made the switch to all M.2 and no longer use SATA SSDs. Please incorporate the number of M.2 drive slots into all motherboard reviews in the future.

Are the motherboard covers functional heat sinks or do are they just covers that will potentially trap heat inside?
 
How many M.2 slots are available on this motherboard? Some of us have made the switch to all M.2 and no longer use SATA SSDs. Please incorporate the number of M.2 drive slots into all motherboard reviews in the future.

Are the motherboard covers functional heat sinks or do are they just covers that will potentially trap heat inside?

Yeah I was wondering the same thing. I've switched to all M2 in my rig and I won't buy any motherboard that doesn't have less than 2 M2 slots. More is better, but 1 M2 slot definitely won't cut it these days. Also, especially if PCI Gen 4 isn't supported.