If there is any driver update for wireless card on your Sony, you may try.

Supports Multiple PVC (Permanent Virtual Circuit)... It means that we can create more than 1 PVC... No VLAN... TD-8616 is a simple bridge modem. To share internet, you need a router to work with it....

What's the model number of the wireless powerline extender? TL-WPA281 or TL-WPA4220? On the back of it, you should be able to find a password which is composed of 8 digits. That's the default Wi-Fi...

What you said is to make powerline adapter pair up and communicate with each other. BUT PA411KIT has no Wi-Fi function. It won't broadcast a Wi-Fi signal....

TL-PA411KIT has no Wi-Fi function at all... You have to access internet by wired connection to it... I think maybe you need TL-WPA4220KIT? http://uk.tp-link.com/download/TL-WPA4220KIT_V1.html

Band of your PA411 is TP-LINK instead of LevelOne...I don't know why you go to that website... Are you trying to disable power saving?...