Specifications Mfr Part Number: M11AD-US009O Processor: Intel Core i3-4150 Processor (3.5GHz, 3MB Intel Smart Cache, Dual-Core) Chipset: Intel H81 Memory: 8GB DDR3-1600 DIMM Memory, Dual Channel, Max Capacity of 16GB Graphics Module: Integrated Intel HD Graphics 4600 Hard Drive: 2TB 7200RPM Hard Drive Optical Drive: Built-in 24X DVD±RW Drive Slots: 1x PCI-Express x16 Slot, 2x PCI-Express x1 Slots SATA: 2x SATA3 Ports, 4x SATA2 Ports Audio: Integrated 6-Channel High Definition Audio CODEC LAN: Integrated Gigabit Ethernet Controller Interface: 2x USB 3.0 Ports, 6x USB 2.0 Ports (4 rear, 2 front), 1x PS/2 Keyboard/Mouse Port, 1x VGA Port, 1x HDMI Port, 1x RJ45 LAN Port, 1x Headphone, 1x Microphone, Audio I/O Jacks Card Reader: 6-in-1 Card Reader, Supports SD/ SDHC/ MS/ MS Pro/ xD/ MMC Power Supply: 300W Dimensions (WxDxH): 173.0 x 400.0 x 360.0 mm Weight: 7.9 kg Operating System: Windows 7 Home Premium 64-bit With USB Keyboard and Mouse