New OEM Dongle Unifying USB Receiver M/N:C-U0007 for Logitech Unifying Devices S9 _ - AliExpress Mobile
Amazon.com: SummitLink Unifying Receiver for Mouse and Keyboard Compatible for Any Logitech Product That Display The Unifying Logo (Orange Star, Connects up to 6 Devices) B083J7DYDT : Electronics
NEW-Logitech C-U0007 Unifying NANO USB Receiver M215/505/705/905 K340/350 & MoreのeBay公認海外通販|セカイモン
USB Unifying Nano Receiver for Logitech Wireless C-U0007のeBay公認海外通販|セカイモン
Logitech Unifying and Nano Receiver - Disassembly - YouTube