max ram amaunt?

[babuta24]

GIGABYTE B360M DS3H
what is max avalable ram on this motherboard and why does it mater if it has 2 or more ram slots? i canot insert 1x 4 gb and 1 x 8gb (12 total) ? or 2 x 8gb?

 

[rgd1101]

https://www.gigabyte.com/Motherboard/B360M-DS3H-rev-10#sp
4 x DDR4 DIMM sockets supporting up to 64 GB of system memory

 

[babuta24]

thanks