Broadcom now offers a dual-port 10Gb Ethernet (GbE) Converged Network Adapter Card (CNA) for Dell PowerEdge 12G rack and tower servers. the 10GbE bandwidth, the Broadcom 57810S-based CNA offers Switch Independent Partitioning which enables segmentation of a single 10GbE port into four virtual ports with flexible allocation of bandwidth to each port. The 10GbE bandwidth, the Broadcom 57810S-based CNA offers Switch Independent Partitioning which enables segmentation of a single 10GbE port into four virtual ports with flexible allocation of bandwidth to each port.