This Microsoft Natural Ergonomic 4000 v1.0 Keyboard is in great working condition and has been thoroughly tested. Its sleek black color and ergonomic design make it a comfortable and stylish addition to your workspace. The keyboard layout is QWERTY (Standard) and it comes with multimedia integration features for added convenience. This unit is a wired USB keyboard with a length of 19.8in. and width of 10.3in. It was manufactured in China and has an English keyboard language. Whether you're using it for work or play, this keyboard is sure to meet your needs.