45W ADP-45BW B AC Adapter Charger for ASUS X551 X551C X551CA X551M X551MA X551MA-DS21Q X551CA X551CA-DH31 VivoBook Q301LA V551LA V551LB V551LA-DH51T New 19v 2.37A 45W Charger AC adapter,Input: AC 100-240v, 50-60Hz Output: 19V 2.37A Compatible with P/N:45W ADP-45BW B asus monitor VC239H MX259H VC279H VX228H VX248H VX238H VX229H MX25AQ MX27AQ MX259H Replacement AC Adapter Charger for Compatible with: ASUS X551 X551C X551CA X551M X551MA X551MA-DS21Q X551CA X551CA-DH31 VivoBook Q301LA V551LA V551LB V551LA-DH51T Connector Size:5.5*2.5mm, Come with one $6.99 Dongle 5.5*2.5 to 4.0*1.35 Converter Cable , so it can also use for the other 4.0*1.35 mm plug laptops ! 12 Months Warranty.30 days money back.