According to one embodiment, an information processing apparatus includes, a body, a bay portion provided in the body and in which a one of a first device having a first relay board and a second device having a second relay board is removably inserted, a first controller which communicates with the first device, a second controller which communicates with the second device, and a connector provided in the bay portion and connected to the first relay board or the second relay board, and including a plurality of first signal pins connected to the first controller via a first bus, a plurality of second signal pins connected to the second controller via a second bus, two ground pins connected to a common ground, a first power supply pins and a second power supply pins, and one of the second signal pins locates between the two ground pins.