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Logitech Wireless Touch Keyboard K400 Plus review: Logitech's $40 K400 Plus spruces up the couch-potato experience - CNET
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Amazon.com: Logitech K400 Plus Keyboard - Wireless Connectivity - RF - Black - USB Interface - Italian : Electronics
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Logitech K400 PLUS Wireless Touch Keyboard With Remote Touchpad 2.4Ghz Unifying Receiver Keypad For Android PC Laptop Smart TV - AliExpress
Logitech K400 Plus Touchpad Wireless Keyboard Black - Usb Wireless Connectivity - On/off Power Switch - 2.40 Ghz Operating Frequency : Target
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