CHERRY Ultraslim Programmable Keypad, Black - 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] External standard keyboard can be connected Matches design of CHERRY keyboards G84-4100 Uses mechanical keys from our ML series with high-precision key action; small physical dimensions: Reliability: MTBF: 550,000 hours