Processor & Chipset Number of Processors Supported: 1 Number of Processors Installed: 1 Processor Manufacturer: Intel Processor Type: Core i7 Processor Model: i7-4790S Processor Core: Quad-core (4 Core) Processor Speed: 3.20 GHz 64-bit Processing: Yes Hyper-Threading: Yes Chipset Manufacturer: Intel Chipset Model: Q85 Express Memory Standard Memory: 4 GB Maximum Memory: 16 GB Memory Technology: DDR3 SDRAM Memory Standard: DDR3-1600/PC3-12800 Number of Total Memory Slots: 2 Storage Total Hard Drive Capacity: 500 GB Optical Drive Type: DVD-Reader Optical Media Supported: DVD-ROM Controllers Controller Type: Serial ATA Display & Graphics Screen Size: 21.5" Display Screen Type: Active Matrix TFT Color LCD Backlight Technology: LED Graphics Controller Manufacturer: Intel Graphics Controller Model: HD Graphics 4600 Graphics Memory Accessibility: Shared Network & Communication Ethernet Technology: Gigabit Ethernet I/O Expansions Number of Total Expansion Bays: 3 Number of Total Expansion Slots: 2 Interfaces/Ports Total Number of USB Ports: 6 DisplayPort: Yes Software Operating System: Windows 7 Professional Upgradable to Windows 8.1 Pro Operating System Architecture: 64-bit Physical Characteristics Form Factor: Desktop Height: 14.5" Width: 20.5" Depth: 2.6" Weight (Approximate): 14.60 lb Miscellaneous Package Contents: ProOne 600 G1 All-in-One PC (ENERGY STAR) Keyboard Mouse Windows 8.1 Pro Media