
The so-called Logitic Unifying receivers are fake and don't work. The picture shows the real ones, but the one I got was in a green box and it didn't say Logitech in white letters on the edge, it said Logi in black letters. The real USB is red, the fake is black. See the choices I posted.

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

Enhance Your WiFi Range with TP-Link TL-WPA4220KIT 300Mbps AV500 Powerline WiFi Extender Start Kit
37 Review

Wi-Fi adapter D-link DWA-140, black
46 Review

Enhance Internet Speed with TP-Link AC1200 Wireless Dual Band USB Adapter (Archer T4U V1)
40 Review

HB-UMLS Sabrent USB 2.0 Hub with 4 Ports and LED Power Switches for Each Port
12 Review

π uni USB C Hub with Ethernet Adapter, 4K HDMI, Gigabit Ethernet, and 3 USB 3.0 Ports for MacBook Pro, iPad Pro, XPS
11 Review

UGREEN USB 3.0 Ethernet Adapter Hub with RJ45: Fast Gigabit Ethernet Converter, 3 Ports USB 3.0 Hub Compatible for MacBook, iMac, Surface Pro, Chromebook, Laptop, PC
11 Review

π CERRXIAN RS232 to Ethernet Serial Device Server - TCP/IP Converter with 1Port DB9 RS232 Serial to Ethernet Connectivity
3 Review