Logitech Wireless Touch Keyboard K400 Plus review: Logitech's $40 K400 Plus spruces up the couch-potato experience - CNET
Logitech K400 Plus Wireless Touch Keyboard | Dell USA
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LOGITECH Wireless Touch Keyboard K400 Plus white (German) K400+ white | Licotronic
Logitech K400 Plus Touchpad Keyboard for TV connected PC
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Logitech K400 Plus Wireless Touch Keyboard – Accessories Store LK