@tree21 You won't be able to install these drivers manually because you have to execute setup.exe (driver folder doesn't include any .inf files). When you unplug the T3U are these still there ? If...

@danbmwm3 TL-SG116 is an unmanaged ethernet switch and it doesn't have an IP address.

@nimaasx Try to find this setting:

@Andrea_22 That's correct.

@r777 M9 and M5 are with 5.5x2.1mm barrel, it should be similar for X20. Power adapter of 12V/2A would suffice.

@ANils If your WAN IP address is like 10.X.1.192 that means you're behind double NAT - once from your ISP and twice from the Deco. Contact your ISP and ask if you can receive your public IP address...