Logitech Cordless Desktop EX 100 with Speakers | eBay
USB Mini Receiver for Logitech C UAK42 MX3000 MX3200 LX710 WAVE S510 LX300 EX100 V22 mouse and keyboard|receiver transmitter|usb stereo receiverusb transmitter receiver - AliExpress
Logitech Cordless Desktop EX 100 Keyboard and Mouse 920-000879