Why is the RED light on when the app shows a connection speed of over 500 Mbit ?

Is it normal that 1000MB rated devices show only half speed rate between them ?

I installed the TP-PLC utility, and it only showed the pair of PA7010 adapters with speed of 509MB between them. Then I removed the AV500 from the outlet, and selected "Add Device" in the utility...

Just to confirm, if I have 2 fast adapters and one slower (AV500) would the 2 fast ones still run at max speed between them or would all 3 run at half speed ?

I had 3 AV500 which were connected and working well. When I replaced 2 of them with a PA7010 kit, the new ones connected and work great, but the old AV500 won't connect anymore although I followed...

Model : Hardware Version : Firmware Version : ISP : Is PA7010 compatible with AV500 adapters ?