HP Pavilion Slimline Desktop PC - AMD E1-2500 / 4GB Memory / 500GB Hard Drive / DVD&plusmn;RW/CD-RW / Windows 8.1 64-bit AMD E1-2500 Accelerated Processor with AMD Radeon HD 8240 graphics 4GB PC3-12800 DDR3 SDRAM 500GB Serial ATA hard drive (7200 rpm) Multiformat DVDRW/CD-RW drive with double-layer support Windows 8.1 64-bit / 6 high-speed USB 2.0 ports / 802.11b/g/n WLAN