Model ET2210 INTS ET2210 INKS ET2210 IUTS ET2210 IUKS CPU Intel® Core™ i5-2400S Processor Intel® Core™ i3-2120 Processor Intel® Core™ i3-2100 Processor Intel® Core™ i5-2400S Processor Intel® Core™ i3-2120 Processor Intel® Core™ i3-2100 Processor Intel® Core™ i5-2400S Processor Intel® Core™ i3-2120 Processor Intel® Core™ i3-2100 Processor Intel® Core™ i5-2400S Processor Intel® Core™ i3-2120 Processor Intel® Core™ i3-2100 Processor Operating System Genuine Windows® 7 Professional Genuine Windows® 7 Home Premium Windows 8 Windows 8 Pro Genuine Windows® 7 Professional Genuine Windows® 7 Home Premium Genuine Windows® 7 Professional Genuine Windows® 7 Home Premium Windows 8 Windows 8 Pro Genuine Windows® 7 Professional Genuine Windows® 7 Home Premium LCD 21.5" / 16:9 Full HD 1920x1080 / LED-backlit 21.5" / 16:9 Full HD 1920x1080 / LED-backlit 21.5" / 16:9 Full HD 1920x1080 / LED-backlit 21.5" / 16:9 Full HD 1920x1080 / LED-backlit Touch Screen Multi Touch None touch Multi Touch None touch Graphics NVIDIA GT 520M / 610M (1GB) NVIDIA GT 520M / 610M (1GB) Intel® HD Graphics 2000 Intel® HD Graphics 2000 Memory Up to 8GB DDR3 at 1333Mhz Up to 8GB DDR3 at 1333Mhz Up to 8GB DDR3 at 1333Mhz Up to 8GB DDR3 at 1333Mhz Optical Drive Tray-in SuperMulti DVD/Blu-ray Combo/Blue-ray Writer Tray-in SuperMulti DVD/Blu-ray Combo/Blue-ray Writer Tray-in SuperMulti DVD/Blu-ray Combo/Blue-ray Writer Tray-in SuperMulti DVD/Blu-ray Combo/Blue-ray Writer Storage Up to 2TB SATA hard drive Up to 2TB SATA hard drive Up to 2TB SATA hard drive Up to 2TB SATA hard drive Ports USB3.0, USB2.0, HDMI-in, HDMI-out, SD / SDHC / MMC Card Reader USB3.0, USB2.0, HDMI-in, HDMI-out, SD / SDHC / MMC Card Reader USB3.0, USB2.0, HDMI-in, HDMI-out, SD / SDHC / MMC Card Reader USB3.0, USB2.0, HDMI-in, HDMI-out, SD / SDHC / MMC Card Reader Sound SonicMaster DTS Surround Sensation UltraPC™ SonicMaster DTS Surround Sensation UltraPC™ SonicMaster DTS Surround Sensation UltraPC™ SonicMaster DTS Surround Sensation UltraPC™