Logitech K400r USB Wireless Touch Keyboard Keypad K400 Pro Plus
Logitech Unifying receiver - Wikipedia
I'm sick of old stuff you can't but anymore on this sub! I bought this Logitech k400r about 10 years ago and no matter how much I abuse and/or neglect it, it
Amazon.com: Logitech Wireless Touch Keyboard k400 with Built-in Multi-Touch Touchpad - White : Electronics
Logitech Wireless K400R Key Slim Keyboard with Touchpad Black (No Receiver) | eBay