Dell Inspiron i15N-3910BK 15-Inch Laptop (2.5 GHz Intel Core i5-3210M Processor, 6GB DDR3, 1TB HDD, Windows 8) Obsidian Black [Discontinued By Manufacturer] Windows 8 Intel Core i5 3210M 2.5 GHz 6 GB DDR3 RAM 1 TB 5400 rpm Hard Drive 15-Inch Screen Dell 3520 is the generic model / series number for Inspiron 15N Dell laptops.