Input:100-240V 50-60Hz,Output:19.5V-12.3A 240W (Compatible with 19.5V-9.23A 180W),Connector size:7.4mm*5.0mm. Please note that this power adapter is only available for computers with a 7.4*5.0 mm jack and not for computers with a 4.5*3.0 mm small jack.