Original GPH Power Adapter Charger AC Adapter for Asus Notebook Laptop Z53 Z53J Z53S Z53t X53S X56S X55SR X55SV X58C X59SR PA-1900-24 A2 X5dad X5DIJ X5dab X53k X53KA X70A X64V W3000 A3000 A6000 Z91 (Electronics)
The unit I bought before Christmas. DC is connected properly, found no humming, noise or the like. Laptop is ASUS and has assumed the power supply immediately. Runs!
