Acer  Veriton M  Intel Core i5-3330 3.0GHz/ 4GB DDR3/ 500GB HDD/ DVD&iexcl;&Agrave;RW/ Windows 7 Professional and Windows 8 Pro Desktop PC (Black) DT.VF8AA.001;VM4620G-UI5333X Processor: Intel Core i5-3330 Processor (3.0GHz Clock Speed, 3.2GHz Max Turbo, 6MB Intel Smart Cache, Quad-Core) Chipset: Intel B75 Express Memory: 4GB DDR3-1333 SDRAM Memory, Max Capacity of 16GB Hard Drive: 500GB 7200RPM SATA2 Hard Drive Optical Storage: Built-in DVDRW Dual Layer Drive Slots: 1x PCI-Express 2.0?x16 Slot, 1x PCI-Express 2.0?x1 Slot, 1x PCI Slot Interface: 2x USB 3.0 Ports, 6x USB 2.0 Ports (4 rear, 2 front), 1x PS/2 Keyboard Port, 1x PS/2 Mouse Port, 1x DVI Port, 2x Display Ports, 1x RJ45 LAN Port, 1x Microphone-in, 1x Headphone-out LAN: Integrated Gigabit Ethernet Controller