Network adapter card having two switchable network connectors

A network adapter card, comprising:

• a main card comprising a peripheral component interface express (PCIe) male connector, an adapter female connector, and a first chip group connected between the PCIe male connector and the adapter female connector, the first chip group converting a PCIe signal received from the PCIe male connector to a small form factor pluggable (SFP+) high speed serial electrical interface (SFI) signal;
• a first secondary card comprising a first adapter male connector and a SFP+ female connector connected to the first adapter male connector;
• and
• a second secondary card comprising a second adapter male connector, a RJ-45 female connector, and a second chip group connected between the second adapter male connector and the RJ-45 female connector;
• the second chip group converting the SFI signal received from the second adapter male connector to a RJ-45 signal;
• wherein the first adapter male connector or the second adapter male connector is pluggable connected to the adapter female connector.