About Powerline TL_PA511 V1 (I didn't find this code in model field), when I plug both Powerline Adapters directly into the single wall socket, all three leds are turned on and device work fine. Adsl router is linked to 1st adapter while a computer is linked to 2nd one.

If I unplug ethernet cable from 1st or 2nd pwl adapter after undefinded minutes,  all 3 leds are turned off of corresponding adapater; this behaviour happens with both devices.

TEST A: If I link again ethernet cable to 1st adapter , It happens nothing and state of device is alwways the same state (3 led turned off).

I read that if there is no activity, powerline adapter goes into power-save mode with power led which is blinking, but I see all 3 led turned off !

Can you suggest me other test? What do you think?