Chasis : 1U Rack CPU : 1 x Intel Xeon E3-1240 V2 RAM : 2 x 4 GB, Up to 32 GB RAM Slots : 4 DIMMs slots, DDR3 HDD Bays : - Internal Storage (max) : Up to 16 TB On board network : 1 Gigabit Internal Raid Controllers : P420 PCI Slots : One PCIe x 8 Gen2, One PCIe x 16 Gen3 USB: USB 2.0 x 4 rear, USB 2.0 x 2 front, one internal (optional) PSU: 2 x 460 W