Beware of ECS A740GM-M and 4+ GB of ram

My ZFS storage server needed more ram so that I could get the VM’s running on it a bit more elbow room. I got a pair of 4GB 240 Ram chips and they were a no go on the ECS A740GM-M motherboard I have. Seems that the BIOS screen needs to have the option to remap memory, which it does not. Too bad the manufactures page for it says it supports up to 16GB