Does not contain "conflict minerals": tantalum, tin, tungsten, and gold. Y Legacy Intel® Core™ Processor Intel Core i3-3xxx Lenovo ThinkPad Edge E531, Intel® Core™ i3, 2.5 GHz, 39.6 cm (15.6"), 1366 x 768 pixels, 4 GB, 500 GB Lenovo ThinkPad Edge E531. Product type: Laptop, Form factor: Clamshell. Processor family: Intel® Core™ i3, Processor model: i3-3120M, Processor frequency: 2.5 GHz. Display diagonal: 39.6 cm (15.6"), HD type: HD, Display resolution: 1366 x 768 pixels. Internal memory: 4 GB, Internal memory type: DDR3-SDRAM. Total storage capacity: 500 GB, Storage media: HDD, Optical drive type: DVD±RW. Operating system installed: Windows 8 Pro. Product colour: Black