HP 600G2PD SFF Intel® Core™ i3-6100 with Intel HD Graphics 530 (3.7 GHz, 3 MB cache, 2 cores)4 GB DDR4-500 GB 2 USB 3.0 2 USB 2.0 (1 fast charging) 1 audio line in 1 audio line out Back: 4 USB 3.0 2 USB 2.0 1 serial; 1 serial (optional); 1 parallel (optional) 2 PS/2 (keyboard and mouse) 1 VGA 2 DisplayPort 1 audio line in 1 audio line out 1 RJ-45 Windows 7 Professional 64 (available through downgrade rights from Windows 10 Pro)