Fit the flexible and speedy Lenovo ThinkCentre M900 Tiny Desktop anywhere without compromising on performance, productivity and convenience features. This PC is built to military specifications and can withstand punishing treatment, including humid environments, extreme temperatures and sustained vibration. Built-in dust filters will significantly reduce dust intake and are easy to clean, making this computer a low-effort, easy-to-maintain workhorse. Desktop Features Processor: 2.5GHz Intel® Core™ i5-6500 Quad-Core Processor Memory: 4GB of DDR4 SDRAM Storage: 500GB Hard Disk Drive Operating System: Windows 7