... &noise regulation 4.Over voltage circuit protect For Hp 19V7.9A Universal Laptop USB Pin Adapter 1). Input: AC ... 3). Power: 180W 150W4). Universal laptop adapter for most laptop, Brand new original laptop adapter, laptop charger, battery charger, power adapter.5 ... .8). USB pin9). Different voltage suitable for te most laptop computers.Company ProfileGuangzhou Sowray Electronic&Technology Co.,Ltd ...