Microsoft Natural Ergonomic Keyboard 4000 in black color. It is designed with an ergonomic layout to provide a comfortable typing experience. The keyboard features a detachable palm/wrist rest and enhanced function keys for added convenience. With a QWERTY layout and English language support, this keyboard is a reliable choice for users looking for a high-quality and efficient device for their computer or tablet setup. The keyboard is wired and connected via USB, ensuring stable and consistent performance.All have been tested and work perfectly!