HP offers a broad assortment of power solutions to help you get the most out of your HP Business Notebooks, including new Smart Adapters that are both energy efficient and convenient as they can be leveraged across multiple notebook families. Smart Adapters can enhance your productivity by powering your notebook while plugged in, as well as charging your battery so that you can take your notebook with you when you unplug. HP Smart Adapters also feature integrated surge protection to protect against power fluctuations that can damage your notebook. HP Smart Adapters help you save on equipment, power consumption costs and travel weight.HP's new Smart adapters enable a new level of compatibility across the HP Business Notebook lineup providing a worry-free user experience. HP's Smart adapter option kits include a "legacy dongle" so that they are backwards compatible with older HP notebooks, providing an unprecedented level of commonality. Customers wanting one common AC adapter for all their HP Business Notebooks and docking stations can use the new HP 135W Smart AC adapter.