Strange problem. Maybe you can contact the retailer to replace your product with a new one, and give a try.

Normally you can always get help in this forum.

Maybe too much electric noise has effected the speed test performance. Anyway you don't need to pay much attention on this kind of test result as it is not accurate. The important thing is you can...

Sent it to you. Good luck.

You can use TP-LINK powerline adapters on extension sockets, but this will affect the performance of powerline adapters. You should know it. Use the powerlineScan utility.It will help you log into...

Maybe the link below will help you although I am not very sure what your problem is: http://forum.tp-link.com/showthread.php?75985-How-to-build-a-secured-powerline-network&region=china