HP Smart Buy ProDesk 600 TWR, i3-4130, 4GB memory, 500GB hard drive, Intel HD 4400 Garphics, DVD+-RW, Win8 with downgrade to Win7 Pro, OPK13, Cyberlink, HP Client Security suite, embedded TPM, DTS audio, 2 PS/2 port, one Serial Port, three independent displays support standard standard (1 VGA and 2 Displayports 1.2), 3-3-3 waranty