The Ultrabay Plus Numeric Keypad is a keypad that can be inserted into the Ultrabay Plus Device Carrier. It then sticks out of the right edge of the notebook. When the device carrier is closed the keypad remains inside the system. When running Windows, the top-left key (where NumLock is expected) opens Microsoft Calculator.
Can control MS calculator directly
USB 1.1 interface with PM extensions
Weight: 42.6g (0.094lbs)
picture of a T23 with Ultrabay Plus Numeric Keypad installed and extended