USB Unifying Receiver by Logitech® LOG910005235 | OnTimeSupplies.com
Logitech Latest Version Genuine Tiny Unifying General Receiver Dongle Connect Up To Six Devices For Logitech Mouse Mice Keyboard - Mouse - AliExpress
Amazon.com: Logitech C-U0007 Unifying Receiver for Mouse and Keyboard Works with Any Logitech Product That Display The Unifying Logo (Orange Star, Connects up to 6 Devices) (C-U0007) : Electronics
Logitech Unifying Receiver for Connecting Multiple Devices