Us version is only for US users. Seems the router will not accept the wrong version, or will damage the router. Don't want to do that, and that is not included in warranty.

If the other devices all work fine with the modem, the internet should be fine. And there is no settings to limit the internet connection since you have reset the modem to factory default. Are they...

There should be no difference between the the two connections. The wireless signal from Deco units are the same, so it depends how fast your clients can switch between signals. Normally clients can...

AV500/500Mbps refers to the powerline rate that the 2 PLC units communicate to each other within the power lines. 500Mbps is the max they can acheive in ideal, but the actaul rate is mainly decided...

Only the model like "TL-WPAxxx" having the wifi function. Check the model of your powerline device from the label, if it is a wifi unit, you will also find a 8-digit wireless password from the label.

AV200 is quite old... when the network droped off, the middle LED was on solid or just went off there, and how about the top LED( POWER light)，if it blinked slowly at that mement? Slowly blinking...