LOGITECH K400+: Wireless keyboard, USB, black, touch pad at reichelt elektronik
How to install the Logitech wireless touch keyboard K400 - Quora
LOGITECH K400+: Funk-Tastatur, USB, schwarz, Touchpad bei reichelt elektronik
Logitech K400 Plus did not come with a USB dongle? Wait!! It's hidden in the box!! | THINKBOX
Logitech K400 Plus TKL Wireless Membrane Keyboard for PC/TV/Laptop/Tablet with Built-in Touchpad Black 920-007119 - Best Buy
Amazon.com: Logitech USB Unifying Receiver, 2.4 GHz Wireless Technology, USB Plug Compatible with all Logitech Unifying Devices like Wireless Mouse and Keyboard, PC / Mac / Laptop - Black : Electronics