Try chipmaker's driver here, the RTL8192CU one. http://www.realtek.com.tw/downloads/...Downloads=true

Model : TL-WN821N and Hardware Version : V1??? Did you try to uninstall the driver and install the latest one on TP-LINK website?

Susan, that's right. It has been done by pressing WPS button.

Download the latest firmware(Archer C7_V1_141204) from the link as below. http://www.tp-link.com/en/support/download/?model=Archer+C7&version=V1#tbl_j Upgrade the firmware to follow the guide as...

I'm not sure if what you said has confirmed with TP-LINK support team here. http://ticket.tp-link.com/index.php?/Tickets/Submit

R480T+ and ADSL Routers' LAN IP should be in different subnet to avooid IP conflict. It is strange to see what all IPs in the topology are in the same subnet. Change 480T+'s LAN IP to 10.10.11.210 to...