<p>An information processing device capable of reliably ejecting a recording medium out of its main body even when the recording medium has been accommodated with an engaging member of a case, which has elasticity and adhesion, stay engaged within a center hole. A CD player comprises a main body and a turn table (19) which is rotatably provided on the main body and rotates with respect to the main body in order to rotate a CD (2). The turn table comprises a table body (20) having a surface (20a) on which the CD (2) is mounted, a penetrating convex portion (21) which protrudes from the surface (20a) of the table body (20) and penetrates through the center hole (2a) of the CD (2), and a plurality of concave portions (24) provided on a surface of the penetrating convex portion (21) at an interval in a circumferential direction of the table body (20).</p>
