An ultrasonic diagnostic apparatus may include a main body and at least one input/output unit coupled with the main body, and configured to receive information from a user or to output information received from the main body and a connection unit configured to connect the main body to the input/output unit and the connection unit comprises a support member configured to support the input/output unit, and at least one connection member configured to adjust a magnitude of a supporting force generated by the support member. The connection member may generate a force in a direction in which the supporting force generated by the support member is cancelled out to thus adjust the magnitude of the supporting force.
