Perixx PERIBOARD 522 Wired Trackball Mechanical Keyboard, Built in 2.17 Inch with Pointing and Scrolling Feature, US English Layout

The glossy surface offers smooth movement, perfect for fast moving and multiple screens control work 9 advanced function keys with multimedia and keyboard lock function Easy to removed and clean the trackball by taping it from the bottom hole of the keyboard System requirements: Windows 7, 8, 10; wired USB connection Mechanical keyboard with built-in 2.17 Inch (55mm) large trackball and tilting scroll wheel; Easily adjust the sensitivity of the trackball movement by FN+F9