2017 Lenovo ThinkCentre M83 High Performance Business Small Factor Desktop Computer, Intel Core i5-4570 3.2GHz, 8GB RAM, 500GB HDD, WIFI, Windows 10 Professional (Certified Refurbished) This computer has been certified refurbished by a Microsoft Authorized Refurbisher, ensuring the highest levels of quality and support. Lenovo M83 Intel I5 Quad-Core 3.2 GHz Processor What's Inside: 8GB RAM, 500GB Hard Drive, DVD Optical Drive, Operating System: Windows 10 Professional Includes: USB Keyboard and Mouse, WiFi Adapter,