SpecificationsPrimary 7.4×5.0 Cable + 4.5×3.0 Adapter Included The chargers DC cable ends in 7.4×5.0 (large barrel), and we include a 4.5×3.0 (small -tip) adapter in the box. Swap the tip to match your Dell. Compatible ModelCompatible with Dell OptiPlex Micro: 9020, 7040, 3050, 5050, 5060 (65W configs), 7010 (most configs), 3060, 3070, 30807050 7060 7070Limited to below 90w, not applicable to 130w