Research reference
Logitech K400 Plus Wireless Touch Keyboard — Black
The K400 Plus places a keyboard and touchpad in one compact device, with dedicated volume controls above the touchpad. The selected black US English model is part 920-007119. It connects through the included USB Unifying receiver, making it useful for occasional control of a PC connected to a larger display. That arrangement saves the need to carry a separate mouse, although a dedicated desk mouse may suit precise everyday navigation better. Check the operating system and available USB port before ordering. Logitech describes up to 18 months of battery life, depending on usage; we have not tested that duration or typing comfort.
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