Elecom Numeric Quiet Compatible with Black Keypad, Wired, Design, Antibacterial, Windows/Chrome OS/macOS, TK-TCM021SKBK

This wired silent numeric keypad is ideal for use in places and times when noise is a concern. Silicone rubber attached to each key top reduces keystroke noise by more than 90% compared to conventional products. Ideal for use in public facilities, conference rooms, and other locations and times when noise is a concern, such as late at night or early in the morning. *1 *1 This is the result of comparing the magnitude of sound energy calculated from the sound pressure level of the keystroke sound of this product (approximately 15 dB) and the conventional model TK-FCM062BK (approximately 45 dB). Sound energy is a value calculated from the measured sound pressure level (Bell value) and the reference value (the minimum loudness of sound that humans can hear). By installing its own firmware, it can be used with Windows, Chrome OS, and macOS. Even if water or other liquid is accidentally spilled on the keyboard, it is equipped with a drainage mechanism that allows the liquid to be immediately drained from the drainage hole on the back of the main unit. (Not waterproof design)