It turned out that in my house all devices were not lower than wifi5 and only the router was with wifi4 and only in the 2.4 range, that was enough for us. But I decided to upgrade and now I'm not overjoyed.
Wi-Fi router Xiaomi Redmi Router AC2100 CN, white
106 Review
Experience Faster and More Stable Internet with Xiaomi Mi Router 4C
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📶 Boost Your Wi-Fi Signal with TP-Link N300 Wireless Extender and Router - 2 High Power Antennas, Access Point, WISP, 300Mbps
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WiFi router TP-LINK Archer C6, black
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🔌 Juiced Systems Silver BizHUB USB-C Multiport Gigabit HDMI Hub with 3 USB 3.0 Ports, Gigabit Ethernet, 4K HDMI, SD/Micro SD, and USB-C Power Delivery
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🔌 USR-TCP232-410s: RS232/RS485 Serial to Ethernet Adapter/IP Device Server with DHCP/DNS Support
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🔌 CERRXIAN RS232 to Ethernet Serial Device Server - TCP/IP Converter with 1Port DB9 RS232 Serial to Ethernet Connectivity
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HB-UMLS Sabrent USB 2.0 Hub with 4 Ports and LED Power Switches for Each Port
12 Review