ThinkCentre M93z 23" AIO Multi-Touch Tx 3 Year On-site standard image Windows 8 Pro 64 downgrade Windows 7 Pro 64 Intel Core i5-4570S Processor 6MB Cache 4GB Memory 500GB HDD Slim Rambo Win7 Wireless Combo N2230 AIO WiFi Edge Mouse Lenovo USB Preferred Pro Full Size Keyboard Camera Mic 23 8 degree Monitor stand Integrated video without GPU Integrated Intel Gigabit Ethernet Adapter Internal speakers Integrated audio Win8 Pro 64 RDVD