Dont't buy a tp-link ADSL wireless router ! Mine only lasted just over a year. It was working but I could not access its http console (visitor wanted the pass phrase), so I restarted it (power cycled). After that it acted as an ethernet switch but nothing else. It was as if the control part of the device had failed.
It would not even respond to the reset button, so no return to factory presets possible.
Replaced with a netgear one - the previous netgear router I had lasted years.
I know none of these are high end devices, but they should do the job.
DIY ? Well I bought it myself and plugged it in myself ;-)
Simon.