Fast, accurate numeric data entry combined with a convenient, mobile design MANHATTAN Numeric Keypad enhances any notebook computing experiences especially when inputting important numeric data. The full-size 18-key layout and scissor-style (X-structure) key switch technology help reduce typing noise, improve response and provide low-profile keystrokes for fast and accurate data entry. A handy backspace key allows swift corrections. The asynchronous number lock function keeps its number-lock mode independent of the computer''s keyboard. Users can simultaneously input letters from the computer''s keyboard and input numeric data from the keypad. Its USB connection, Plug-and-Play installation and ultra slim, lightweight construction make it easy to pack and travel.