Hello
I don't know the answer on your question, but I will advise you to not buy this router. I bought it some days ago and I have had just trouble with it.
First of all I had trouble with getting Download Master to find my HDD (you probably saw my thread on that). When Download Master finally found my HDD I tried to download a bitTorrent-thing. And I can say that it is the worst BT-client in the world, it sets things in queue for no reason and the downloads can stand in queue for days (the last two days no downloads have started on my router, they just stand in queue). Download Master do not let you choose to download just some of the files in a BitTorrent-file. There are also some problems with resuming on downloads.
I also have big problems with port forwarding.
Btw.
You have to restart the router for every little change, and when you restart the router the currently downloading(probably queued) files are cleared and you have to add them again. The system restarting message says it will take 20 secounds for the router to restart, but most of the times it takes several minutes.
Do not buy this router, at least wait for a unofficial firmware and download client who works.