The IBM Flex System™ CN4054 10 Gb Virtual Fabric Adapter is a 4-port 10 Gb converged network adapter (CNA) for Intel processor-based compute nodes that can scale to up to 16 virtual ports & that supports Ethernet, i SCSI, & FCo E. The adapter supports up to eight virtual NIC (v NIC) devices, where each physical 10 Gb E port can be divided into four virtual ports with flexible bandwidth allocation. The CN4054 Virtual Fabric Adapter Upgrade adds FCo E & i SCSI hardware initiator functionality. The IBM Flex System EN4054 4-port 10 Gb Ethernet Adapter is based on similar hardware but simply operates as a straight 4-port 10 Gb E adapter. The EN4054 it is supported by POWER7 processor-based compute nodes. Figure 1 shows the adapters (they have the same physical appearance).