... the lowest voltage after current interruption to protect your laptop/notebook computer 7) Different voltage suitable for the ... /M4 4.8*1.7 HP/COMPAQ W/ 19V/M5 5.5*2.5Acer, Compaq, Delta, HP, Fujitsu, Gateway, ... / 1.0mm pin) 19V/M7 5.5*2.1Acer, Compaq, Delta, HP, Fujitsu, Gateway, Toshiba, Liteon 19.5V ... connect it with the adapter. 4. Start your laptop/notebook computer. If it can not work normally, ...