Technical Details

Operating system: Windows 7 Professional 64 (available through downgrade rights from Windows 8.1 Pro 64)
(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.)
Processor family: Intel® Core™ i7 processor
Processor: Intel® Core™ i7-4790 with Intel HD Graphics 4600 (3.6 GHz, 8 MB cache, 4 cores)
Chipset: Intel® PCH C226
Environmental: Low halogen
Form factor: Tower
Memory, standard: 4 GB 1600 MHz DDR3 non-ECC Unbuffered RAM (1 x 4 GB)
Memory slots: 4 DIMM
Internal drive bays: Two 8,9 cm (3.5”); One 6,3 cm (2.5”)
External drive bays: Two 13,3 cm (5.25”); 1 slim optical drive bay
Internal drive: 500 GB 7200 rpm SATA
Additional storage: 15-in-1 media card reader (optional)
Storage controller: Integrated SATA (5 ports 6 Gb/s) with RAID 0, 1 supported. Requires identical hard drives (speeds, capacity, interface).
Optical drive: Slim SATA SuperMulti DVD writer