Lenovo ThinkCentre M900. Processor frequency: 2.5 GHz, Processor family: 6th gen Intel® Core i5, Processor model: i5-6500T. Internal memory: 4 GB, Internal memory type: DDR4-SDRAM, Memory clock speed: 2133 MHz. Total storage capacity: 500 GB, Storage media: HDD. On-board graphics adapter model: Intel® HD Graphics 530. Operating system installed: Windows 7, Power supply: 65 W. Chassis type: Mini PC. Product type: Mini PC. Product colour: Black,Red