Type: HP Z8 G4 Workstation. Seller refurbished units may have minor cosmetic blemishes.Processor: Single Intel Xeon Gold 6148 Twenty Core 2.4Ghz Processor. 20 Total Cores, 40 Virtual Cores in Hyperthreading Mode! (Additional processor configurations available).Memory: 128GB. Supports up to 3TB of total memory, Six channel memory up to 2666MHz DDR4 ECC memory with dual CPUs, 24 DIMM Slots (12 DIMMs per CPU)..Storage: New 512GB 6Gb/s SATA Solid State Drive (Additional storage configurations available).Storage Controller: Onboard SATA Controller, Raid 0,1,5,10 Expansion Bays:4 internal 3.5" bays (All 4 include acoustic dampening rail assemblies)2 external 5.25" bays (175mm depth limit)1 dedicated 9.5mm slim optical disk drive bay Interface Support:10 channel SATA 6.0 Gb/s interfaceFactory integrated RAID available for SATA drives (RAID 0, 1 and 10)Internal USB 3.1 Gen1, USB 3.1 Gen2, USB 2.0Graphics: Nvidia Quadro P600 2GB GDDR5 Graphic Card Ports: (4) Mini DP 1.4 (Additional graphic cards available). Support for 4 PCI Express x16 Gen 3 graphics cards -includes four 6+2-pin graphics power cables.Operating System: Windows 10 Professional 64-Bit Pre-Installed.Power Supply: 1125W/100V/15A 90% Efficient wide-ranging, active Power Factor CorrectionOptical Drive(s): DVDRW Drive.Expansion Slots: Slot 1: PCIe Gen3 x4 - Transforms to PCIe Gen3 x8 when 2nd CPU is installedSlot 2: PCIe Gen3 x16Slot 3: PCIe Gen3 x16 - Available ONLY when 2nd processor is installedSlot 4: PCIe Gen3 x16Slot 5: PCIe Gen3 x4Slot 6: PCIe Gen3 x16 - Available ONLY when 2nd processor is installedSlot 7: PCIe Gen3 x4Note:The PCIe x4 and PCIe x8 connectors above are open ended, allowing a PCIe x16 card to be seated in the slot. Networking: 2 RJ-45 to integrated Gigabit LANFront Ports: Included: 4 USB 3.1 Gen1 Type-A connector. Left most connector has charging capability, 1 Combo Headset, 1 Optional Media Card Reader Optional: 2 USB 3.1 Gen1 Type-A connector. Left most connector has charging capability, 2 USB 3.1 Gen2 Type-C connector, 1 Combo Headset, 1 Optional Media Card ReaderRear Ports: Included: 6 USB 3.1 Gen1 (aka USB 3.0), 1 Serial, PS/2 keyboard and mouse, 2 RJ-45 to integrated Gigabit LAN, 1 Audio Line-In (can be retasked as microphone), 1 Audio Line-OutOptional: 2 RJ-45 to 10GbE LAN portsInternal Ports: Internal Slot 1 CPU1: PCIe Gen3 x8 - always availableInternal Slot 2 CPU2: PCIe Gen3 x8 - available when 2nd CPU is installed2 USB 2.0 ports available with a single 2x5 header1 USB 2.0 port available with a 1x6 header1 USB 3.1 Gen1 and 1 USB 2.0 port available with a 2x6 headerAudio Controller: Integrated Realtek HD ALC221 Audio Speakers: Internal SpeakerPeripherals: Power Cable Included. Mouse, Keyboard, and Video Cable Not Included.Dimensions: 50 Lbs, 21.46'' x 8.5'' x 17.13'' (L x W x H)*Systems are built to order and fully customizable. Please call for more information. Note that a stock photo is used and unit may differ depending on configuration.