Acer Computer Aspire AS5551-2450 15.6" Notebook PC - Black Box Contents - Acer Aspire AS5551-2450 Notebook, 6-Cell Lithium-Ion Battery, AC power adapter; Software Bundle - Windows 7 Home Premium 64-bit AMD Athlon II P320 2.1GHz Processor 1MB L2 Cache 4GB DDR3 1066 RAM (8GB max) 320GB 5400RPM SATA Hard Drive