Built for Performance and Expandability The Cisco UCS C240 M4 small form factor (SFF) server is Cisco's newest 2-socket, 2U rack server, built for performance and expandability across a wide range of storage-intensive infrastructure tasks, from big data to collaboration. Performance, Flexibility and Efficiency The enterprise-class UCS C240 M4 SFF server expands Cisco's Unified Computing System portfolio in a 2U form factor with the addition of the Intel Xeon E5-2600 v3 and v4 series processor family, which provides the best combination of performance, flexibility, and efficiency gains. Furthermore, the UCS C240 M4 SFF server has 24 DIMM slots, up to 6 PCI Express (PCIe 3.0) slots, up to 24 front-loading drives, and two (optional) internal SATA boot drives, for a total of 26 internal drives.