Logitech Unifying Receiver for Connecting Multiple Devices
Logitech EX110 USB Wireless C BT44 Receiver 831511 0000 Logitech USB on PopScreen
831511-0000 Logitech Ex110 Wireless USB and Ps2 C-bt44 Receiver P/n 8 for sale online | eBay
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
Amazon.com: Logitech 920003051 K270 Wireless Keyboard, USB Unifying Receiver, Black : Electronics
Logitech Cordless EX110 Keyboard Mouse No Receiver | eBay