... & MPEG-2 Layer I and II, MP3Audio Mode Dual (main/sub), StereoFrequency: 32 kHz, 44.1 kHz, 48 kHz, 16 kHz ... :Typ RS232 bidirectionalBitrate 115,2 kBit/s max.Plug Connector SUB-D-9Function: Update of FirmwareEthernet:10/100 MBit compatible interfaceFunction ...