Summary: This item shippped fast, and was extremely easy to install and use. I didn't even have to read the instructions. Unlike wireless keyboard and mouse combos I have purchased in the past, this one did not require a cd for installation.
Summary: Logitech always comes through from keyboards and mice to surround sound via Z-5500 5.1 THX Certified. Never had any trouble with Logitech Optical Mouse products, both wired and wireless. This was my 1st purchase of a wireless keyboard and mouse combo.