Replacement For HP ProBook 6550B Adapter is rated at 18.5V 3.5A 65W.The high quality laptop charger for hp probook 6550b provides your laptop with safe and reliable power.It is over Charge protection, Voltage protection, Temperature protection, Short circuit protection, enjoys 1-Year Warranty,60-Day Money Back!This HP ProBook 6550B Power Supply is guaranteed to work with your laptop when you see your adapter’s OEM part number or laptop model number in our compatible list. The list might be incomplete because it is difficult to collect all information at one time. If you are not sure of your choice, please type the part number and model number as special comment in our shipping form at the time of checkout. We will ship you the correct adapter based on your input.The Adapter is a 65W rated power supply and replaces hp probook 6550b laptop charger. Designed to meet HP’s original specifications. The Replacement HP AC Adapter is designed to be 100% manufacturer compatible and will meet OEM specifications.Replacement laptop AC adapter is guaranteed to meet or exceed original laptop AC adapter.Full 2 hours burning test; 3 times quality check and 2 times drop test by QC before package.Warranty and Guarantee: 1 year warranty, 60 days money back.