HP Pavilion 500-270 PC. Windows 8.1 4th generation Intel Core i3-4130 processor. 8GB PC3-12800 DDR3 1600 SDRAM memory 1x8GB expandable to 16GB. 1TB 7200 RPM Serial ATA hard drive. Intel HD graphics 4400. Wireless chiclet style keyboard with volume control. Win8 hot keys and optical mouse. SuperMulti DVD burner. 2 USB 3.0 rear. Wireless LAN 802.11b/g/n featuring single-band 1x1. 300W Power Supply.