Logitech Harmony C-RE4A Wireless Range Extender 815-000013 Only No Power Cord | eBay
Logitech USB Dongle Extender - Works with Unifying Receiver
Amazon.com: Logitech Wireless Keyboard and Wireless Mouse Combo with NEW Unifiying Receiver Technology and Long-Range 2.4 GHz Connection, Multimedia Hot Keys, Extended Battery Life : Electronics
IOGEAR - GKM552RB - Long Range 2.4 GHz Wireless Keyboard and Mouse Combo