If you need to boost the Internet connection in a building with two or more stories, then I believe that this is the best alternative available rather than a Wi-Fi repeater because it does not load up the primary Wi-Fi network in the same way.
Enhance Your WiFi Range with TP-Link TL-WPA4220KIT 300Mbps AV500 Powerline WiFi Extender Start Kit
37 Review
Enhance Internet Speed with TP-Link AC1200 Wireless Dual Band USB Adapter (Archer T4U V1)
40 Review
π ASUS USB-BT400 USB Bluetooth Dongle Receiver - Compatible with Laptops and PCs, Plug and Play for Windows 10/8/7/XP. Supports Printers, Phones, Headsets, Speakers, Keyboards, and Controllers in Black.
79 Review
πΆ TP-Link TL-WN822N USB Wifi Dongle - Ultra-Fast 300Mbps Wireless Network Adapter for PC/Laptops. Supports Multiple OS Including Win10/8/7/XP, Linux, and Mac OS 10.9-10.15!
27 Review
π StarTech.com NETRS2321P: 1-Port RS232 to Ethernet IP Converter, Serial over IP Device Server - Black
5 Review
π StarTech.com NETRS232 Serial to IP Ethernet Device Server - DIN Rail Mountable - Serial Device Server - Serial Over IP Device Server (Black)
4 Review
π CERRXIAN RS232 to Ethernet Serial Device Server - TCP/IP Converter with 1Port DB9 RS232 Serial to Ethernet Connectivity
3 Review
π» MacBook Purgo Adapter 2020/2018/2016/2016
4 Review