32-Channel Digital I/O, 68-pin DDC, PXI Digital Waveform Instrument Terminal Block—The SMB-2163 helps you connect to compatible single-ended PXI Digital Waveform Instrument for testing and debugging. This terminal block features 32 single-ended digital I/O channels and 5 single-ended control I/O channels. The SMB-2163 also features one 68-pin DDC connector, 37 SMB jack connectors, and one banana-style connector.