The AC-DC 19-volt, 4.74-amp power adapter; 90 watts, is suitable for use with the Intel Core i-based DQ77KB and Mitac PH-12-LI mainboards. The connector plug has an inner diameter (ID) of 5.08 mm and an outer diameter (OD) of 7.37 mm, the center conductor is .65 mm with an engagement length of 12 mm. Operating temperature is 0~40°C.