CPU Intel Xeon Processor D-1531, 6-core 2.2 GHz System memory Total DIMM slots: 4 Maximum memory: DDR4 128 GB ( 32 GB RDIMM x 4 ) Memory modules pre-installed: 32 GB ECC RAM ( 8 GB RDIMM x 4 ) Flash Memory 4 GB DOM Hard Drive Tray Front: 2.5" / 3.5" x 12 Rear: 2.5" SSD slot x 6 Supported Hard Drive Front: SAS 12Gb/s, SAS 6Gb/s, SATA 6Gb/s HDD and SSD Rear: SATA 6Gb/s SSD LAN Port 2 x SFP+ 10GbE ports, 4 x Gigabit ports LED Indicators 10 GbE, Status, LAN, Storage expansion port status Buttons System: Power button and reset button Form Factor 2U, Rackmount Temperature 0-40oC Relative Humidity 5 to 95% non-condensing, wet bulb: 27oC. Power Supply Redundant power: Input 90 to 264VAC, 450W x 2 PCIe Slot Number: 4 Slot 1: PCIe Gen.3 x8 Slot 2: PCIe Gen.2 x4 Slot 3: PCIe Gen.3 x4 Slot 4: PCIe Gen.3 x4 or PCIe Gen.3 x8 Note: Slot 4 provides the width of PCIe Gen.3 x 8 when slot 3 is not in use. Slot 4 then provides the width of PCIe Gen.3 x4 only when an expansion board is installed in slot 3. Fan 4 x 6 cm smart cooling fan PACKAGE CONTENT TES-1885U Ethernet cable x 4 Power cord x 2 Flat head screws (for 3.5 inch HDD) Flat head screws (For 2.5 inch HDD) Quick Installation Guide Item Dimension (L inchxW inchxH inch) 21 x 18 x 4