The HP KG298AAABB 90W Dongle AC Adapter is a must have for businesspersonsand students on the go as it is compatible with most notebook models.You can also power HP legacy notebooks via the dongle that comeswith this adapter. The surge guard built in this HP laptop adapterprotects your device from the damage caused by inconsistent powerflow. The power rating indicator of this 90W laptop adapter indicatesthe power consumption level and helps reduce excessive electricityusage. The provided Velcro strap enables easy cable management andstorage.