Thisadapter is server network card with two port and fiber connection can be addedto improve performances of network as well as saving the valuable slot for PCIExpress server. In the connection of GE for optical fiber network, the specialI/O bandwidth equipped on PCI Express can ensure the superior performance ofthe connection without occupying the bus band width. In addition, design of theadapter can show the excellent performance in a multi-processor system. Whenthe adapter is used with the receiving end extension for Microsoft or theextensible I/O of Linux together, network card with two ports of the adaptercan effectively balance the network load among multiple central processingunits.