Missing receiver, should work over bluetooth Powers on, not fully tested. The *Read YUNZII YZ19 Wireless Mechanical Numpad is a 19-key hot-swap RGB keyboard with a mint color backlight. Made with PBT plastic keycaps and GATERON switches, this mechanical keyboard offers a high-quality typing experience. Perfect for desktop use, this wireless keyboard from YUNZII features a dye-sublimation keycap printing and a compact design for easy handling. With its English language layout and USB connectivity, this keyboard is a stylish and functional addition to any workspace.