Specifications: Product Type:Input: 100~240V~1A 50/60Hz Output: 18.5V-3.5A-65W.Connector Size:7.4 *5.0 mm Black tips(Note: Please make sure the DC output and tip size of ac adapter are accordant before you buy IEFUU Compatible with HP Computer Model: Compatible with HP Probook 6460b 6465b 6475b 6555b 6565b 6440b 6360b 6445b 6455b 6540b 6545b 5220m 5330m 4545s 4340s 4525s 4710s 6450b 5310m 4535s 4730S 4510s 4720s 4310s 4320s 4330s 4411s 4420s 4425s, Probook 430 G1/430 G2/440 G1/440 G2/450 G1/450 G2/455 G1/455 G2/640 G1/645 G1/650 G1/655 G1 IEFUU Compatible with HP Computer Model: Compatible with HP EliteBook 840 G1/820 G1/820 G2/840 G2/850 G1/850 G2/740 G1/745 G2/250 G1/255 G1,Compatible with HP EliteBook 2530p 2570p 2760p 6930p 2560p 8530w 8540p 8540w 8460w 2170p 2730p 2740p 8470w 8440w, Compatible with HP 2000 Series 2000-2a20nr 2000-2b19wm 2000-219dx 2000-299wm 2000-2b10nr 2000-2b20nr 2000-2b30dx 2000-2b43dx 2000-2b44dx 2000-2d22dx 2000-2d24dx 2000-2d27dx 2000-2d29dx 2000-2d49w