CHERRY UltraSlim Programmable Keypad, Light Gray - 26 keys Programmable 21-key numeric layout Equally suitable for left-handed and right-handed users Low space requirements All keys can be user-defined with up to 24 characters per key 4 additional user-programmable function keys, can be labeled individually Digits can be entered independently of the status of the Num Lock in the system (operation on notebook PC) Variable decimal separator [.], [,], [00], or [000]