Thank you for your answer! The problem is in this case: https://forum.tp-link.com/showthread.php?108076-Archer-T9E-Incompatible-with-Windows-10-1803 I've managed to change modem settings for 5GhZ.

After I've installed the card into the PCIe slot and started the PC, it didn't even come to UEFI settings site...it just rebooted once again. So my conclusion is to install the drivers, although the...

Model : T9E Hardware Version : Firmware Version : ISP : Hello! I have installed Archer T9E on Win 10 and in the modem settings it doesn't change to 5 GHz, though both 5 and 2,4 are setted. How can I...