Now one of our most popular keyboards comes bundled with a optical 2 button scroll mouse. The E03601QUS201-C, PS2 keyboard, which features a large L shape Enter key and all the Windows application keys. Comes with the color matching optical 2 button PS2 scroll mouse which 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.