Apple Mac Pro 4.1 (Early 2009 - MB871LL/A - Mac Pro 4.1 - A1289 - 2314), Intel Quad-Core Xeon W3520 2.6GHz (TB 2.9GHz), 20Gb (2x 8Gb, 2x 2Gb), 320Gb, DVD-RW, NVIDIA GeForce GT 120 512Mb (DVI, miniDP), BlueTooth, 2x LAN RJ-45, 5x USB, 4x FireWire 800, 2x optical audio, Mac OS El Capitan, full tower