
The good: this product does work, has a button to prevent charging battery if you want. comes with an adapter to expand compatibility with other HP laptops. Seperate, detachable power cables (air/auto vs 120v AC).
The bad: First, this adapter is not very travel friendly. This adapter is HUGE compared to many of the regular OEM power adapter. check the size before you buy. The wire that goes out of the adapter to the laptop is very stiff, which may be a hassle for most. The default setting when you plug any of the power plugs (air/ac/auto)in is set to "not charge" your laptop, meaning if you unplug the adapter from the ac/auto/air source and replug it in, it will not charge your laptop until you press the button, which can easily result in a empty laptop battery if you keep moving around with the charger and forget to press the button on top. lastly, this adapter's plug for the laptop is the kind with a small pin (think antenna cable for televisions)but it includes an adapter to allow the charger to be plugged into other hp models, this adapter does not fit snug when connected to the cable (pulls off easily).
Overall, i wouldn't recommend this unless you plan on leaving it plugged into the wall, and RARELY need it for travel.
Product Description
Enjoy the flexibility and convenience of having an extra AC adapter for your Pavilion or Compaq notebook PC, whether you're at home, in the office, or traveling. You can leave one adapter at your desk and keep one in your carrying case for quick plug-in. And you'll no longer need to climb under the desk to unplug the cable or tussle with tangled cords. The HP Air/Auto/AC Adapter is energy-efficient because it is designed to draw minimal power. Ultimate Versatility- Get three adapters in one convenient package and always have the right adapter whether at home, in the office, on the road, or in the air. Smart-pin technology works with the notebook to optimize power consumption. Provides integrated surge protection to guard against power fluctuation. The convenient charging switch gives you the freedom to charge or just pass power. Genuine HP Notebook power adapters are tested with all compatible HP notebook PCs so HP can deliver the highest quality products, services, and solutions to your home. Compatibility: HP Pavilion dv2, dv3, dv4, dv7, dv5, dv6, dv2000, dv3000, dv6000, dx6000, dv9000, tx2, tx1000, tx2000, dv8000; HP G3000, G5000, G6000, G7000; Compaq Presario A900, CQ40, CQ45, CQ50, CQ60, C300, C700, C900, F500, F700; HP: G60, HP Special Edition 510, 530; HP Compaq nc82xx, nw82xx, nx82xx, nx9000, 2510p, 2710p, 6510b, 6515b, 6710b, 6715b, 6720s, 6820s, 6910p, 8510p, 8510w, 8710p, 8710w, nc2400, nc4010, nc4200, nc4400, nc6120, nc6140, nc6220, nc6230, nc6320, nc6400, nc8230, nc8430, nw8240, nw8440, nw9440, nx6110, nx6115, nx6325, nx7300, nx7400, nx9420, nx9600, tc4200, tc4400; HP HDX 16 series.

Features
- Get three adapters in one and always have the right adapter whether at home, in the office, on the road
- Charges from AC power in home or office and DC power (with included adapter) from car or airplane
- Smart-pin technology reduces power consumption when the maximum adapter rating is reached
- Charge or just pass power with the charging switch; built-in surge protector
- See description below for HP and Compaq laptop compatibility