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This 330W AC Adapter is specifically engineered to fulfill the power requirements of your Dell laptop. Input Voltage: 100-240VAC, 50-60Hz. Output: 19.5V 16.92A Max (330W). Connector: 7.4mm*5.0mm. Packed with 330W power, this adapter allows you to simultaneously run your system and charge its battery from electrical outlets. It features a rubber strap for neat cable management and a LED light ring on the DC connector. It is compatible with Dell Alienware 17 R4, Dell Alienware 17 R5, Dell Area 51M, Dell Area 51M R2, Dell M16 R1, Dell M17 R3, Dell M17 R4, Dell M18 R1, Dell X16 R1, Dell X16 R2, Dell X17 R1, Dell X17 R2, Dell G5 15 5535, and Dell G7 16 7635. This 330W laptop charger is CE/FCC/ROHS safety certified. It delivers fast and efficient charging of compatible devices. Multiple safeguards are integrated for superior safety: over voltage protection, over temperature protection, and short circuit protection. TPE wire is utilized, which provides a significant improvement in elasticity and toughness compared with PVC material. It is also more environmentally friendly and can be recycled. Stable performance, halogen-free flame retardant V0, non-phosphorus, and ozone-resistant properties contribute to safety and environmental performance. Acquire a second AC adapter for your notebook to keep one at the office and one for home or travel