Genuine Windows 7 Home Premium 64-bit, 2nd Generation Intel Core i5-2400S Processor, 2.50GHZ, Intel H61 PCH Chipse, 6MB Cache, DMI 5.0GT/s, 6GB PC3-10600 DDR3 SDRAM memory (1x2GB and 1x4GB) (ecxpandable to 8GB), 1TB (Terabyte) 7200RPM Serial ATA hard drive, Slot-load SuperMulti Blu-ray Player Read: 8x DVD R, 6x DVD RW, 6x DVD R DL, 5x DVD-RAM, 2x BD-ROM, 8x DVD-ROM, 6x DVD-ROM DL, 24x CDR, 24x CDRW, 24x CD-ROM Write: 8x DVD R, 4x DVD RW, 4x DVD R DL, 5x DVD-RAM, 16x CDR, 10x CDRW, Intel HD Graphics, Up to 1696MB Total Available Graphics Memory as allocated by Windows , Onboard 10/100/1000Mbps Gigabit Ethernet Support, Integrated Bluetooth and Wireless LAN 802.11b/g/n featuring Single-band (2.4Ghz) 2x2 MIMO technology, Integrated speakers, Beats Audio Studio Quality Sound -- Hear music the way the artist intended, Built in TV Tuner: watch, pause, rewind, and record live TV, HP Media Center remote control, 2 SODIMM (DDR3) (occupied), 2 SO-DIMM (occupied), 1 MXM Graphics Module PCI Express slot (available), 2 PCI-E x1 mini socket slots (occupied), 6-in-1 memory card reader (left side) ? supports Secure Digital (SD, SDHC), MultiMedia Card, Memory Stick, Memory Stick Pro, Headphone/Mic (left side), Line-in (left side), 7 USB 2.0 ports (2x3.0 left side, 4x2.0 rear, 1x2.0 back bottom wireless dongle) (6 available), RJ45 (10/100/1000 LAN) (rear center), Subwoofer Out (rear), Line-out (rear), RF Input (rear), IR blaster jack (rear), HP wireless keyboard and wireless optical mouse, Integrated HD webcam and built-in microphone, 1920x1080 Multi-touch enabled 23" diagonal widescreen Full HD LED backlit display