可防止在运输过程中发生损害的光驱

The drive includes a main guide bar, an auxiliary guide bar, an optical read/write head and a lug. Main guide bar and the auxiliary guide bar are paralleled. The optical read/write head possesses a jacket to clamp the auxiliary guide bar. The lug on the auxiliary guide bar is movable between first position and second position. When in the first position, the lug blocks off the jacket and limiting moving of optical read/write head. When in the second position, the lug relieves restriction to the jacket.