System is off all the time even you keep holding reset button for 15 seconds? If so, you should replace it under warranty because it is faulty for some reason...

You bought a product for China Mainland... Where did you buy it? There is no English firmware for it. This is not the right place for you to ask for help. You should contact fae@tp-link.com.cn for...

1. You didn't answer what I said. I cannot figure out what's wrong. 2. Under network---WAN, WAN ports is 1, 2 or 3? 3. Ensure that you can access internet when PC is connected to any of your ADSL...

Sorin, choose Keywords instead of URL path as Mode.

No idea. Can you confirm with local resellers who may know or have tested Samsung ML-2160 printer? Besides, I think there is a way to configure it under Ubuntu 14.04 but you must know how to install...

Maybe TP-LINK has a beta firmware or some other methods for you to try. http://ticket.tp-link.com/index.php?/Tickets/Submit