HP COmpaq Elite small form factor Intel Core i5-660 Processor 3.33-GHz 8 GB DDR3 SDRAM PC3-10600 SuperMulti LightScribe DVD Writer Drive Intel 82578 GbE Network Connection (integrated) Intel HD Graphics integrated integrated audio vga port display port 120 GB SSD hard drive 500 GB hard drive Windows 7 Pro 64 bit activated MS Office 2013 Pro Plus activated 22" LG HD monitor keyboard and mouse I can install Windows 8.1 or 10 if desired, no charge, however in my experience Windows 7 is faster, less intrusive of your privacy, easier to use and will be supported through 2020 and beyond regarding security updates.