Will using Dll by this way limited in some platform?

i want to use the System.Rntime.Serializtion.Formatters.Soap
So I add a “ref” to the project.But when the unity reopened , the “ref” has gone.

So I try to copy the Soap.dll into Asset\plugin, this time ,it works.

But,I am using Win7X64 , will this dll works in other platform like PS4/Xbox1/wiiU?

If it’s linked with your game - like putting it in Plugin, yes it should.