Input: 100-240V 50-60Hz 1.8A; Max Output: 19.5V-12.3A 240W (Compatible with 180W ); Connector size: 7.4mm*5.0mm. 240W Laptop Charger Compatible with Precision 7510 7520 7530 7710 7720 7730 7740 7750 7760 7770 7780 7670 7680 M2800 M4300 M4600 M4700 M4800 M6400 M6500 M6600 M6300 M6700 M6800 3510 3520 240W Laptop Charger Compatible with Alienware M15 M16 M17 X15 X16 X17 Laptop Safety:The Laptop Charger port output up to 240W power delivery enables fast and efficient charging of compatible devices; Package Includes: 1x 240W Laptop Charger 1x Ac Power Supply Cord