AC Doctor INC 90W AC Adapter Power Charger for HP ProBook 6545b 4330s 4331s 4430s 4431s 4435s 19V 4.74A 90W ac adapter charger for HP ProBook 4331s 6545b 4330s 4430s 4435s 6470B 384021-022 463995-001 ed495aa HSTNN-CBOX laptop power supply. Input : AC 100-240V 2A 50/60 Hz, Output : DC 19V 4.74A, Connector plug Inter and Outer Diameter: 7.4x5.0mm 2-prong US Power cord included. CE UL RoHS certified, safe use. 12 months warranty, OEM factory price, US local dispatch. NOTE: If the output Voltage Ampere DC jack size and connector Dia. is the same as your ac adapter it can fit your computer. Please double ensure. If not it will not compatible.