New Unifying Wireless USB Receiver for Logitech Keyboard K250 K270 K320 K340 K350 K750 K800 N305 MK520 MK550 MK710|usb dongle satellite receiver|usb analog tv receiverusb dvb s receiver - AliExpress
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
Logitech MK335 Full Size Wireless Combo Keyboard & M310 Mouse w/ USB Receiver 920-008478