A surgical instrument including a housing, an elongated portion (120), and a loading unit (200) is disclosed. The elongated portion extends distally from the housing, defines a longitudinal axis, and includes an electrical contact (150). The loading unit is configured to releasably engage the elongated portion. The loading unit includes an electronic component, a proximal portion including an electrical contact (250) in electrical communication with the electronic component, and an end effector coupled to the proximal portion and configured to manipulate tissue. Engagement between the elongated portion and the loading unit causes the electrical contact (150) of the elongated portion to engage the electrical contact (250) of the loading unit thereby electrically connecting the elongated portion and the loading unit.