Type: All-In-One Processor: Intel Core i5-4590S Processor (4 cores / 4 threads, 3.0GHz, 6MB cache), Turbo Boost 2.0 (3.7GHz), integrated Intel HD Graphics 4600, integrated 1600MHz dual-channel DDR3 memory controller, Virtualization Technology Operating System: Windows 8.1 Pro 64-bit Chipset: Intel Q87 Express Chipset Memory: 4GB (1x4GB) PC3-12800 1600MHz DDR3, two 204-pin SODIMM sockets (notebook) Graphics: Intel HD Graphics 4600 in processor, uses main memory, DirectX 11, external digital monitor support via DisplayPort™, supports dual independent display; Maximum resolution: 3840x2160 (DisplayPort)@60Hz Display: 23.0" (584.2mm) Multi-touch Full HD 1080p (1920x1080) TFT color, IPS panel, wide viewing angle (+/- 89°), LED backlight, 250 nits, 16:9 aspect ratio, 1000:1 contrast ratio, anti-glare, ambient light sensor. Work as standalone monitor via VGA-in connector Storage: 500GB (5400 rpm) hybrid hard disk + 8GB MLC NAND flash memory, SATA 6.0Gb/s, 2.5" wide Optical storage: DVD burner, SATA 1.5Gb/s, 12.7mm high, fixed, not removable Camera: Camera on top of screen, 2.0-megapixel, fi xed focus, supports 1080p, with dual array digital microphone, LED indicator, physical switch on/off Card reader: 11-in-1 media card reader Audio: High Definition (HD) Audio, Realtek ALC283 / two internal stereo speakers (3watt x 2), Dolby Advanced Audio v2 certified, Microsoft Lync certified Communications: Ethernet: One gigabit ethernet port, Intel I217-LM (Clarkville), Wake on LAN; WLAN: 11a/b/g/n wireless, PCIe Half Mini Card, Intel Centrino Advanced-N 6235, Wi-Fi + Bluetooth combo adapter, 2x2; Bluetooth: Bluetooth 4.0 wireless, integrated in Intel Wi-Fi + Bluetooth combo adapter. Expansion slots: mSATA One mSATA slot PCIe Mini Card One PCI Express Mini Card slot I/O ports: Rear ports Four USB 3.0, ethernet (RJ-45), DisplayPort-out, VGA-in; Side ports Two USB 3.0 (one Always On / Powered), one microphone (stereo, 3.5mm), one headphone / microphone combo jack (stereo, 3.5mm) Power: 150 watts, autosensing, 85% PSU Dimensions: Multi-touch model with frame stand: 568 x 93.1 x 447.3 mm Weight: 11,22kg Stand Features: Stand type: Frame stand; Adjustable stand: between 10° and 45°; Toolless back cover, stand removal; Support VESA mount (100mm). Accessories: Keyboard: Preferred Pro USB Keyboard (USB connector), Lenovo logo; Mouse: Enhanced Optical USB Mouse, black, Lenovo logo. Color: Business black color Warranty Terms: 3-year on site warranty. Security: Intel AMT Intel Active Management Technology 9.0 (Intel AMT 9.0) Security chip Trusted Platform Module (TPM 1.2-compliant) URL: http://shop.lenovo.com/us/en/desktops/thinkcentre/m-series-all-in-ones/m93z/index.html Gross weight: 14.72 kg. Warranty: 36 month(s)