This Microsoft Natural Ergonomic Keyboard 4000 V1.0 (KU-0462) is a high-quality keyboard that provides a comfortable and efficient typing experience. With an ergonomic design, this black keyboard is perfect for those who spend long hours typing. The keyboard is compatible with USB connectivity and features multimedia integration, a stand, enhanced function keys, programmable one-touch buttons, and quiet keys. This keyboard is a great option for anyone in need of a comfortable and efficient typing experience. The keyboard layout is QWERTY (Standard) and the unit quantity is 1. The keyboard language is English.