Choose the Key Tronic KT800U1M or KT800U2M keyboard and mouse bundles and youll not only get a great keyboard at a great price, you will also get a 2 button optical scroll mouse. The KT800U1M and KT800U2M has our KT800 keyboard, which features a large L shape Enter key and the Windows application keys. The optical color matching 2 button USB scroll mouse is easy to use and great for the internet and software packages. Bundling these 2 products into one convenient package and youve got a great combination.This product meets the European Union RoHS initiatives.