ThinkCentre M72e Tiny 3/3 Warranty Intel Core i3-3220T Processor 2.8GHz 3MB Cache 4GB Memory 500GB HDD Windows 8 Pro 64bit downgrade Windows 7 Pro 64bit with Win 8 Pro 64 RDVD Gigabit Ethernet Adapter Integrated Intel Graphics Lenovo USB Preferred Pro Full Size Keyboard Lenovo Enhanced Optical USB Mouse Internal Mono Speaker Non-stand Wireless WLAN Intel N105