Logitech Wireless Touch Keyboard K400 User Manual - Manuals+
Random Teardown #012: Logitech K400r Wireless Keyboard with Trackpad - YouTube
Logitech Wireless Touch Keyboard K400 User Manual - Manuals+
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USER MANUAL Logitech Wireless Touch Keyboard K400 Plus | Search For Manual Online
Logitech K400 Plus Wireless Touch TV Keyboard With Easy Media Control and Built-in Touchpad, HTPC Keyboard for PC-connected TV, Windows, Android, Chrome OS, Laptop, Tablet - Black : Electronics