Compatible with win7 and later, macOS10.12 or later. ★ Can be used with our other liquid tab and plate tabs as an additional shortcut key. ★Note: Please set the combination like "Ctrl+Z" with one key. Press multiple keys at the same time will not respond, so to use "Ctrl+Z", register "Ctrl+Z" on one key. Please note that one key is "Ctrl" and the other key to "Z" and press at the same time will not respond.