HP Compaq Pro 6300 Microtower PC. Processor model: Intel Core i7-3770 with Intel HD Graphics 4000 (3.40 GHz, 8 MB cache, 4 cores), Motherboard chipset: Intel Q75 Express. Memory slots: 4 DIMM. Discrete graphics adapter model: Intel HD Graphics 4000. Optical drive type: SATA SuperMulti DVD writer. Operating system provided: Windows 7 Professional