ASUS Laptop adapter 65w to30w 5.5x2.5 pin CA S400CA S500CA S550 S550C S550CA X552E K551L Y481CC K401 A501 A501LB K501 K501LB K555L X452 K455L D552 R556L A550JK W419L W518L W519L R510LV W40C W408L R409L D451V R409C Y583L X551M X551MA X551MAV R510LV R455L