This high quality Total Micro 65W 3-Prong AC adapter meets or exceeds OEM specs and is for the Dell Latitude 3550, 5280, 5480, 5490, 5495, 5580, 5590, E6440, E6540, E7440, E7450, Chromebook 3180, 3189, 3120. Lifetime limited warranty. Eqv 492-BBKH