Aspire E5-521 Notebook. BLACK Chassis Processor: AMD Quad-Core A4-6210 (4 x 512KB L2 cache 1.80GHz) Graphics: Integrated AMD Radeon R3 OS: Windows 8.1 (64-bit) Memory: 4GB (4/0) DDR3L SDRAM Storage: 500GB SATA hard drive 5400RPM; integrated Super-Multi drive; SD card reader LED TFT LCD: Glossy 15.6" (1366 x 768) Communications: 802.11b/g/n WLAN + Bluetooth 4.0 gigabit LAN webcam - Upgradeable up to 16GB DDR3L SDRAM (8GB x 2) - Interface ports: DC-in RJ-45 LAN VGA headphone/speaker HDMI with HDCP USB 3.0 two USB 2.0 Six-cell lithium-ion battery: up to 8.0 hours of life (MobileMark 2012) depending on configuration and usage