Aspire E5-521 Notebook. BLACK Chassis Processor: AMD Quad-Core A8-6410 (4 x 512KB L2 cache, 2.0GHz, up to 2.40GHz) Graphics: Integrated AMD Radeon R5 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