Amazon.com: Logitech USB 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
Logitech K270 Wireless Keyboard for Windows, 2.4 GHz Wireless, Full-Size, Number Pad, 8 Multimedia Keys, 2-Year Battery Life, Compatible with PC, Laptop - Newegg.com
Logitech K270 Wireless Keyboard with Unifying Receiver
Logitech K270 Wireless Keyboard with Unifying Receiver
Pairing A Logitech MK270 Keyboard And Mouse To A Non Unifying Receiver. – wherethingsareborn
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Logitech K270 Wireless Keyboard - OTC.LK
Logitech K270 Wireless Keyboard Setup And Review - YouTube
Wireless Dongle Receiver Unifying Usb Adapter For Log.itech Mouse Keyboard Connect 6 Device For M515 M600 K800 Mk520 K270 Etc - Tablet Screen Protectors - AliExpress
Logitech Wireless Keyboard K270 (920-003051)
How to Pair Mouse & Keyboard with Logitech Unifying Receiver