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
very old keyboard question : r/logitech
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Logitech Keyboard
Vintage Logitech 867091-1100 Y-SG13 White PS/2 Keyboard New Read | eBay