No more lost Logitech keyboard receivers!!! - YouTube
What can someone do if they've lost the wireless USB connector to their Logitech keyboard and mouse? - Quora
Logitech K400 Plus did not come with a USB dongle? Wait!! It's hidden in the box!! | THINKBOX
Logitech Unifying receiver - Wikipedia
Replacing Your Wireless Mouse / Keyboard Receiver - ComeauSoftware.com
Logitech Unifying Receiver for Connecting Multiple Devices
Logitech K400 Plus did not come with a USB dongle? Wait!! It's hidden in the box!! | THINKBOX
Fix: Logitech Keyboard not working - Appuals.com
Logitech Unifying Receiver for Connecting Multiple Devices
Logitech K400 Plus did not come with a USB dongle? Wait!! It's hidden in the box!! | THINKBOX
LOGITECH LOST OR DAMAGED WIRELESS MOUSE LOST USB REPLACEMENT- 2018 - YouTube
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