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 C-U0007 Unifying Receiver for Mouse and Keyboard Works with Any Logitech Product That Display The Unifying Logo (Orange Star, Connects up to 6 Devices) : Electronics
Logitech K350 Wireless Keyboard Replacement USB Unifying Receiver Part 820-002546 Y-R0053 - Newegg.com
Logitech K350 Wireless FRENCH layout Keyboard (NO RECEIVER)
Logitech K350 Wireless Wave Keyboard with Palm Rest
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Logitech Wireless Keyboard K350,Wave design with Constant Curve layout: Curved layout guides hands into just the right position By Visit the Logitech Store - Walmart.com
Logitech K350 Wireless Keyboard - Wave-shaped, Cushy Cushion, USB Port, Unifying Receiver, Advanced 2.4 GHz Wireless, Instant Media Access, Programmable Keys, 2 AA Batteries, Black - 920-001996 at TigerDirect.com
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Logitech K350 Wireless Wave Ergonomic Keyboard with Receiver | eBay