Logitech Wireless K400 Plus Radio Keyboard German, QWERTZ, Windows® Black Built-in touchpad, Mouse buttons | Conrad.com
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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 : Amazon.co.uk: Computers & Accessories