2900-01 Single SLR75 - 75GB, 28GB/hr, LVD 2900-02 Single SLR75 - 75GB, 28GB/hr, LVD 2900-06 Single SLR75 - 75GB, 28GB/hr, HVD 2950-01 Single SLR140 - 140GB, 43GB/hr, LVD 2950-02 Single SLR140 - 140GB, 43GB/hr, LVD 2950-06 Single SLR140 - 140GB, 43GB/hr, HVD