Dell Vostro 3900 MT. Intel Pentium G3260 [Intel Pentium Processor G3260 (3M Cache, 2.90 GHz)]. 4GB DDR3 1600 (4GBx1) [4GB Single Channel DDR3 1600MHz (4GBx1)]. 500GB 7200 rpm SATA 6Gb/s Hard Drive. Windows 7 Professional English/French 64bit (Includes Windows 8.1 Pro license). DVD RW Tray [Tray load DVD Drive (Reads and Writes to DVD/CD)]. Intel [Intel HD Graphics]. No WLAN. US English (QWERTY) Dell KB212-B QuietKey USB Keyboard Black. Dell Optical (Not Wireless), Scroll USB (3 buttons scroll) Black Mouse. Ports: Back: (2) USB 3.0, (2) USB 2.0, (2) PS2, HDMI, VGA, RJ-45 (10/100/1000 Ethernet), 3-stack audio jacks supporting 5.1 surround sound. Front (2) USB 2.0, MCR 19:1 (optional), Mic and Headphone Jacks . 3.5" Bays: 2 internal; 5.25" Bays: 2 external bays. PCIe x1: 2 Slots PCIe x16 (Graphics): 1 Slot PCI: 1 Slot . Display NA.