Dell PowerEdge R310 Server System Motherboard Socket LGA1156 5XKKKBrand: DellPart Number: 5XKKKMPN: 5XKKK, 05XKKK, CN-05XKKKType: MotherboardCompatible Brand: For DellCompatible Product Line: For Dell PowerEdgeCompatible Model: For Dell PowerEdge R310Processor Socket: LGA1156Chipset: Intel 3420 ChipsetNumber of Slots: 6 DIMM slotsMemory Type: DDR3 SDRAMMaximum Capacity: Up to 32GB (4 DIMM slots)Speed: Supports DDR3 memory speeds up to 1333MHzUPC: 761835916170Expansion Slots:1 x PCIe x16 slot1 x PCIe x4 slotStorage:4 x SATA II (3.0 Gbps) portsNetworking:Integrated Broadcom 5709C Dual Port Gigabit EthernetUSB Ports:4 x USB 2.