Dell Precision Tower Workstation-Desktop T3620-Intel Core i7-7th Generation || 16 GB GB DDR4 || 1TB HDD || Ubantu (DOS) || Without Monitor || DVD Drive Add-in cards Optional Thunderbolt 2 PCIe Card (coming soon) Optional 1394 a/b PCIe Card (3 Ports – 2x 1394b + 1x 1394a) Optional Serial/Parallel Port PCIe Card Support for up to (1) additional PCIe SSD on Dell Precision Ultra-Speed drive (x8) with active cooling I/O Ports Front 2 – USB 2.0 2 – USB 3.0 1 – Microphone 1 – Headphone Internal 1 – USB 2.0 4 – SATA 6Gb/s Rear 2 – USB 2.0 4 – USB 3.0 2 – PS2 2 – DisplayPort 1 – HDMI 1 – RJ45 Network Connector 1 – Serial 1 – Audio Line in/Microphone 1 – Audio Line out