An information processing apparatus includes a mouse driver that adds a second data to a first data showing a movement distance of a mouse cursor, and transmits the combined data to an OS. The information processing apparatus has: an input portion that inputs the first data from an external device via a KVM switch, and a flag showing effectiveness or invalidation of adding the second data to the first data; and a controlling portion that transmits the first data input to the input portion to the mouse driver, and when the flag shows invalidation of addition of the second data, the controlling portion interrupting between the mouse driver and the OS, acquiring the combined data, removing the second data from the combined data, and transmitting the first data to the OS.