@Limouna The Archer D50 is a DSL modem router, while you start the thread on Wi-Fi router section, that is why you cannot find the model number. Back to your case, what is the OS version of the 2...

@zero.a7 We can see the online devices both in router mode and AP mode. In AP mode, we can see clients on the home page, click it and we will see the online devices. You can take 2 pictures of the...

@Mare This IP is the internet IP address of the main router. While we need ping the LAN IP of the C3150 when it gets stuck. So with the HDD plugged and router stucked, please try to ping the LAN IP...

@mln06 Please upgrade the firmware first, then check whether it works with WPA2/PSK. Click here to download the firmware from the official website. Here is the faq to upgrade it.

@mgroen The powerline adapter does not support power over ethernet. We need plug it into the wall sockets to power it up.

@martino FYI, all the TP-Link powerline adapters are compatible with each other. Cause the current device is AV500, you can refer to case 1 of this instruction to get some suggestions.