Logitech Pro 2000 Cordless Keyboard Logitech Unifying receiver - The tiny receiver stays in your notebook. Comfortable even on the go - Small enough to take with you, the sculpted shape fits your fingers for a naturally comfortable grip. Back and forward thumb buttons - There's more control within your reach. Move quickly through Web pages. There's no need to unplug it when you move around, so your mouse is always connected when and where you feel like using it.