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Logitech K400r Wireless Keyboard | eBay
Muti-media Wireless Keyboard For Logitech K400R 2.4GHz Unifying Receiver Touch Pad Mouse for PC Laptop _ - AliExpress Mobile
Amazon.com: CM Ultra Thin Silicone Soft Keyboard Cover Skin Compatible with Logitech Wireless Touch Keyboard K400 Plus (Not for Old Version K400 & K400r) (Black) : Electronics