Asus 19V 4.74A 90W K501UX K53E K55A Q550L U56E X53E X551M X555LA Laptop Charger AC Adapter Power Supply NEW Slim Square ASUS 90W Original AC Power supply Adapter Cord. Remove any white UPC labels to uncover original adapter markings. Connector size: 5.5mm x 2.5mm - MAKE SURE YOUR CONNECTOR SIZE MATCHES AND FITS BEFORE YOU PURCHASE Compatible Adatper Models: PA-1900-42, 48, 30, EXA1202YH, ADP-90YD B (ADP-90YD has 2 connector sizes, make sure to purchase the right connector size! ex: this 5.5mm x 2.5mm model is not compatible for Q534U) AC input voltage:AC 100-240V, 50-60Hz DC output voltage:19V DC output current: 4.74A Suit For Laptop ASUS X750JA, EXA1202YH, PA-1900-48, PA-1900-42, PA-1900-30