About this item 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 device. Compatible ModelCompatible with OptiPlex Micro: 9020, 7040, 3050, 5050, 5060 (65W configs), 7010 (most configs), 3060, 3070, 3080, 7050, 7060, 7070 (Limited to below 90W, not applicable to 130W). Compatible with Latitude E6430, E6420, E6320, E6400, E7240, E5530, E6440, E6540, E7440, E5430, E6510; Inspiron N7010, N7110; Inspiron 11, 13, 14, 14R, 17, 17R, 1440, 1520, 1521, 1525, 1545, 1720, 1750, 3451, 3520, 3521, 3531, 3537, 3541, 3543, 3721, 5521, 5545, 5547, 5720, 5735, 5749, 7537, 7548; Studio XPS-15, 15z, 16, 17; Precision M4400, M4500, M4600, M4700. Note: If your original label shows 19.5V 3.34A / 19.5V 4.62A or 65W/90W, choose this version. If your system specifies 130W, please choose the higher-watt option. Safe & Reliable Multi-protect (over-voltage/current/