Operating System :HP ThinPro, HP Smart Zero Technology, Microsoft Windows Embedded Standard 7E Chipset :N/A Processors : AMD GX-420GI Memory Support :4 GB DDR4 1866 MHz , up to 32 GB, 2 SODIMMs Hard Drive :SSD Removable Media : N/A Expansion Bays :N/A Expansion Slots :N/A Graphics :626 MHz Audio :N/A Communications :N/A I/O Ports : (4) Hi-Speed USB 2.0 ports (2 front, 2 rear), (3) SuperSpeed USB 3.0 ports (2 front, 1 inside chassis), (2) DisplayPort, (1) VGA, (2) PS/2 keyboard/mouse ports, (1) RJ45, (1) Serial port Power :65W Dimensions : 25.1 x 12 x 22 cm Weight :1.52 kg