... moduleInterface (Bus) TypeHWICNetworkingConnectivity TechnologyWiredData Link ProtocolRS-232, RS-530, X.21, V.35, RS-449, RS-530AData Transfer Rate8 MbpsStatus IndicatorsPort statusExpansion ... / ConnectivityInterfaces1 x serial - RS-232/449/530/V.35/X.21Compatible Slots1 x HWICMiscellaneousCompliant StandardsFCC Class A certified, TUV ...