HP Z440 Workstation; 700W 90% Efficient Chassis; Intel Xeon E5-1620v3 3.5 10M 2133 4C CPU; HP Z Turbo Drive 256GB PCIe SSD; 16GB DDR4-2133 (2x8GB) RegRAM; Blu-ray writer; HP USB Keyboard/USB Optical Mouse; NVIDIA Quadro K4200 4GB graphics; Thunderbolt-2 PCIe 1-port I/O card; Windows 7 Professional 64 installed with Windows 8.1 Professional License; ENERGY STAR qualified; Limited 3 years parts, 3 years labor, and 3 years onsite service (3/3/3) standard warranty.