HP Workstation Z420 Tower GRADE AIntel Xeon E5-263016GB RAM DDR3 ECC 256GB SSD SATANo ODDNVS315Front Panel: 2 x USB 3.0, 1 x USB 2.0, FirewireRear Panel: 2 x USB 3.0, 4 x USB 2.0, Firewire2 x VGA (NVS315)PS2 Ports8 x RAM DIMM Slots2 x PCI-E x161 x PCI-E x42 x PCI-E x81 x PCI8 x SATARAID: 0, 1Sticker: Windows 10 Pro