Amazon.com: New Logitech Unifying USB Receiver for Mouse MX M905 M950 M505 M510 M525 M305 M310 M315 M325 M345 M705 M215 : Electronics
Logitech K350 Wireless Wave Keyboard with Palm Rest
Amazon.com: Logitech Unifying Receiver, 2.4 GHz Wireless Technology, USB Plug Compatible with all Logitech Unifying Devices like Wireless Mouse and Keyboard, PC / Mac / Laptop - Black : Electronics
New Unifying Wireless USB Receiver for Logitech Keyboard K250 K270 K320 K340 K350 K750 K800 N305 MK520 MK550 MK710 _ - AliExpress Mobile