With its revolutionary new architecture and bold new industrial design, the HP Z400 Workstation helps you accomplish more with every minute of your time and every dollar of your investment.Form factorConvertible minitowerOperating systemWindows 10 ProCPU1x Intel XeonW3565 3.20GHzMemory3GB PC3-10600 DDR3 1333 MHz DDR3 ECC unbufferedStorage500GB SATA HDD Graphics adapterNVIDIA Quadro NVS 295Optical driveSATA SuperMulti DVD writerFront I/O2 USB 2.0, 1 IEEE 1394a standard, 1 audio out, and 1 microphone.Rear I/O6 USB 2.0, 2 PS/2, RJ-45 (NIC), 1 audio line in, 1 audio line out, 1 microphone in;audio ports can be retasked to function as line in, line out, microphone, or headphone.Expansion slots2 PCI slots (full-height, full-length)1 PCI Express Gen1 slot x8 mechanical/x4 electrical1 PCI Express Gen2 slot x8 mechanical/x4 electrical2 PCI Express Gen2 slots x16 (one dedicated for graphics)AudioIntegrated Intel/Realtek HD ALC262 AudioNetworkingIntegrated Broadcom 5764 PCIe LOM ControllerTitleHP Z400 Workstation VA791UT Intel W3565 3.20GHz/ 3GB RAM/ 500GB HDD/ Win10 ConditionRefurbishedContentWorkstation, power cord, keyboard, mouseManufacturerHPModelZ400MPNVA791UT#ABASKUZ400http://www.compeve.com/Products/Workstations/HP/z400/Z400_compeve__3.jpghttp://www.compeve.com/Products/Workstations/HP/z400/Z400_compeve__7.jpg