... charged to all brands of laptop. Such as Dell, Hp, Toshiba, Samsung, Acer, IBM, Sony, Lenovo, Fujitsu, Compaq, Delta, Gateway, ... 2.5mmIBM,Lenovo etc.M3DC 16V6.5*4.4mmSony,Fujitsu etc.M4DC 18.5V4.8*1.8mmCompaq,HP ... etc.M5DC 19V5.5*2.5mmAcer,Compaq,Delta,HP,Fujitsu,Gateway,Toshiba,Liteon etc.M6DC 19V5.0*3. ... etc.M7DC 19V5.5*2.1mmAcer,Compaq,Delta,HP,Fujitsu,Gateway,Toshiba,Liteon etc.M8DC 19.5V6.5*4 ...