Ask a Swiss: How to connect a non-Unifying Logitech keyboard & mouse to a new dongle
Logitech Wireless Combo MK260 920-002950 Black 8 Hot Keys USB RF Wireless Standard Keyboard and Mouse - Newegg.com
K260 Wired USB Mini Multimedia Keyboard » PC DEN
Receptor Usb inalámbrico, receptor Dongle, adaptador USB para logitech mk270/mk260/mk220/mk345/mk240/m275/m210/m212/m150, Keybo de ratón|Ratones y accesorios de teclados| - AliExpress
Teclado inalámbrico Logitech K270 con receptor Unifying