The RS232 is an external keyboard with 89 keys to match a 101 and 102 key keyboard. The keyboard has a track point with 2 mouse buttons. This device is provided with PS/2 or USB interface or with RD232 interface. Because of the hermeticity, the keyboard is secured against water and dust. It also has a backlight that enables you to work in dark environment. In addition, this keyboard has a IP54 degree of protection.