HP EliteDesk 800 G1 MT Desktop, Intel Core i5-4590 3.3 GHz, 4GB RAM, 500GB HDD, DVDRW, Intel HD, Windows 8.1 downgraded to Windows 7 Pro

Processor Intel Core™ i5-4590 3.3 GHz with Intel HD Graphics 4400 6 MB cache 4 cores Memory 4 GB DDR3-1600 SDRAM Configuration: 1 x 4 GB 4 x DIMM Hard Drive 500GB 7200 rpm SATA Optical Drive Slim SATA SuperMulti DVD writer Software Operating System: Windows 7 Professional 64 (available through downgrade rights from Windows 8.1 Pro) This system is preinstalled with Windows 7 Professional software and also comes with a license and media for Windows 8.1 Pro software. You may only use one version of the Windows software at a time. Switching between versions will require you to uninstall one version and install the other version. You must back up all data (files, photos, etc.) before uninstalling and installing operating systems to avoid loss of your data Display Monitor Not Included Graphics Integrated Intel HD Graphics 4400 Audio HD audio with Realtek ALC221 codec DTS Studio Sound audio management technology Microphone and headphone front ports (3.5mm) Line-out and Line-In rear Ports (3.5mm) Multi-streaming capable Internal speaker (standard) Input Devices HP USB keyboard HP USB Mouse Networking Intel I217LM Gigabit Network Connection Power Supply 320 W 92% efficient, active PFC Dimensions Width 17 cm Depth 44.2 cm Height 39.9 cm Weight 9.3 kg Interfaces 4 USB 3.0 6 USB 2.0 1 serial 2 PS/2 (keyboard and mouse) 1 VGA 2 DisplayPort 1 audio in 1 audio out 1 RJ-45 1 headphone 1 microphone Expansion 2 full-height PCIe x1 1 full-height PCIe x16 1 full-height PCIe x16 (x4) Warranty 3 Year Manufacturer Warranty     Click the banner to get it at ONLY: GBP838.98