Aspire E5-531-C7Y7 Notebook. BLUE Chassis Processor: Intel Celeron Processor 2957U (2MB Intel Smart Cache 1.40GHz) Memory: 4GB (4/0) DDR3L SDRAM OS: Windows 7 Home Premium (64-bit) Storage: 500GB SATA hard drive 5400RPM; integrated Super-Multi drive; SD card reader LED TFT LCD: Glossy 15.6" (1366 x 768) Graphics: Integrated Intel HD Graphics (200MHz base frequency 1.0GHz max dynamic requency) Communications: 802.11b/g/n WLAN + Bluetooth 4.0 gigabit LAN webcam