Original Logitech Keyboard K400r K400plus Unifying Mirco Dongle Receiver USB | eBay
Logitech | Computers, Laptops & Parts | Logitech Wireless K40r Key Slim Keyboard With Touchpad Usb Receiver White | Poshmark
Logitech K400 Plus did not come with a USB dongle? Wait!! It's hidden in the box!! | THINKBOX
Logitech K400 Plus Wireless Touch Keyboard 920-007119 B&H Photo
Logi Bolt USB Receiver for Multi-Computer / Device Use
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