Model: HP Z6 G4 Workstation.Processor: Dual Intel Xeon Bronze 3106 Eight Core 1.7Ghz Processors. 16 Total Cores, 32 Virtual Cores in Hyperthreading Mode! (Additional processor configurations available).Memory: 32GB. Supports up to 768GB of total memory, Six channel memory up to 2666MHz DDR4 ECC memory with dual CPUs, 12 DIMM Slots (6 DIMMS on the optional 2nd CPU Riser).Storage: 1TB NVMe M.2 SSD and 2TB 7.2K PC SATA (Additional solid state or hard drive configurations available).Storage Controller: Onboard SATA Controller, Raid 0,1,5,10 Expansion Bays:2 internal 3.5" bays (with acoustic dampening rail assemblies pre-installed)2 external 5.25" bays1 dedicated 9.5mm slim optical disk drive bay Interface Support:6 channel SATA 6.0 Gb/s interface, supports Raid 0/1/5/106 channels are eSATA configurable for use with eSATA CTO/AMO Kit (No hot plug / hot swapsupported)USB 2.0, USB 3.1 G1 (aka USB 3.0), USB 3.1 G2 (optional)Graphics: AMD Radeon Pro WX 4100 4GB GDDR5 Graphic Card Ports: (4) Mini DP 1.4 (Additional graphic cards available). Support for 2 PCI Express x16 Gen 3 graphics cards -includes two 6-pin graphics power cables.Operating System: Windows 10 Professional 64-Bit Pre-Installed.Power Supply: 1000W 90% Efficient Power SupplyOptical Drive(s): DVDRW Drive.Expansion Slots: Slot 1: PCI Express Gen3 x4 - CPU with open-ended connectorSlot 2: PCI Express Gen3 x16 - CPUSlot 3: PCI Express Gen3 x4 - PCH with open-ended connector*Slot 4: PCI Express Gen3 x8 CPU with open-ended connector (slot converts to x4 electrical when SSD isinstalled in 2nd M.2 slot)*Slot 5: PCI Express Gen3 x16 - CPUSlot 6: PCI Express Gen3 x4 - PCH with open-ended connector*M.2 Slot 1: M.2 PCIe Gen 3 x4 - CPU up to 80mm storage devicesM.2 Slot 2: M.2 PCIe Gen 3 x4 - CPU up to 80mm storage devices* Open-ended connector allows a greater bandwidth (e.g. x16) card to be installed physically into a lower bandwidth connector/slot.Networking: 2 RJ-45 to integrated Integrated Intel I219LM GbE LANFront Ports: Included: Power button, 1 Headset audio port, 4 USB 3.1 G1 Type A (1 charging)Optional: Power button, 1 Headset audio port, 2 USB 3.1 G2 Type C, 2 USB 3.1 G1Type A (1 charging)Rear Ports: Included: 6 USB 3.1 G1 (aka USB 3.0) Type A ports, 2 1Gbe LAN ports (1x supporting Intel AMT), Audio: 1 Lineout, 1 Line in (Line in can be retasked as microphone), 1 PS/2 mouse port, 1 PS/2 keyboard port, 1Rear power buttonOptional: 1 serial port (cable up to rear bulkhead)Internal Ports: 1 USB 3.1 G1 (aka USB 3.0) single-port header1 USB 2.0 single-port header1 USB 2.0 dual-port headerAudio Controller: Integrated Realtek HD ALC221 Audio Speakers: Internal SpeakerPeripherals: Power Cable Included. Mouse, Keyboard, and Video Cable Not Included.Dimensions: 50 Lbs, 18.3'' x 6.65'' x 17.5'' (L x W x H)Condition: Refurbished - Fully Tested. Seller refurbished units may have minor cosmetic blemishes. *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.