... .8*1.7mmCompaq,HP M519.0V5.5*2.5mmAcer,Compaq,HP,Fujitsu,Toshiba,Delta M619.0V5.0*3.0mmSamsung ... M719.0V5.5*2.1mmAcer,Compaq,Delta,HP,Fujitsu,Toshiba M819.5V6.5*4.4mmSony ... *5.4mmIBM,Lenovo option M1218.5V7.4*5.0mmHP,compaq option M1324.0V7.5*2.5mmApple option M1418.5V12 ... sure it is fit for your requirements2. Connect the power cord with the adapter correctly Caution:1. It is normal ...