We have a Swann H.264 DVR with 4 Swann CCTV cameras. The electrician has unplugged everything and walked. Which one of the two power adapters we have is for the DVR - one is marked 12v DC 0.4a and the other 12v DC 0.6a? Both plugs fit the socket on the DVR - I know we're talking 0.2a difference here but was wanting to make sure we put it back together correctly. Nothing is labelled and there's no box or instructions and we couldn't find anything definitive via Google. Thanks!