Logitech Unifying Receiver for Connecting Multiple Devices
Amazon.com: Logitech 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 S510 wireless keyboard, missing receiver, think any RF receiver will do | Overclockers Forums
Logitech USB Unifying Receiver 58 H x 38 W x 14 D Black 910 005235 - Office Depot
Logitech Wireless Keyboard Receiver In Computer Keyboard & Mouse Bundles for sale | eBay
Best Buy: Logitech USB Unifying Receiver 910-005235