US Patent 7848089 Keyboard assembly

A keyboard assembly includes a main keyboard and a numeric keyboard. The main keyboard includes a first connector formed on a first end surface and a second connector formed on a second end surface. The numeric keyboard includes a third connector formed on a first side surface and a fourth connector form on a second side surface. When the numeric keyboard is located at the first end surface of the main keyboard, the fourth connector is connected to the first connector. When the numeric keyboard is located at the second end surface of the main keyboard, the third connector is connector is connected to the second connector.