Genuine Logitech USB Dongle Extender for Unifying Receiver | eBay
Very short range on logitech wireless keyboard and mouse. : r/htpc
TP-Link TL-WA855RE Wi-Fi Range Extender 300Mbps, WiFi Repeater - MaxGaming.com
Logitech USB Dongle Extender - Works with Unifying Receiver
Best Buy: Logitech RF Wireless Extender 966195-0403
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