SH68-C68-S, PXIe-6738 PXI Analog Output Module Connector—The NI-6738 mounts to the front of the PXIe-6738 PXI Analog Output Module and adapts the PXIe-6738 pinout to the PXI-6723 SH68-C68-S cable pinout. The NI-6738 helps you upgrade without changing SH68-C68-S cables that have already been installed.