Logitech USB Unifying Receiver 58 H x 38 W x 14 D Black 910 005235 - Office Depot
Logitech K750 Wireless Solar Keyboard for Windows, 2.4GHz Wireless with USB Unifying Receiver, Ultra-Thin, Compatible with PC, Laptop - Black - Newegg.com
Amazon.com: Logitech K360 Wireless Keyboard with Unifying Receiver (Blades of Grass Version)