I've got a recently bought PC with Gigabyte Z490M (1.0) motherboard. I've got single memory module (Adata 32GB AD4U3200732G22-SGN) so far and when my computer came from the seller the memory was mounted in DDR4_A2 socket in the motherboard.
The motherboard manual says how to locate memory to enable Dual Channel mode, but doesn't say how to locate it when only one memory module is available.
Then I decided to check if all memory sockets work. When I mounted it to DDR4_A1, then the computer didn't even start (not even launched POST). Is it desired behaviour? Are other sockets than A2 available only if more memory modules are mounted? Or single memory module should work in every memory socket? Should I file a complaint to my seller?