sbRIO-9627 and 9626 RMC Connector Pinout Compatibility

[hosamib99]

We are planning on developing a custom RMC board compatible with both the sbRIO-9627 and the sbRIO-9626. Looking at the connector pinout info on the respective user manuals of both boards we noticed that some of the pins labeled GND on the 9627 are labeled as RESERVED in the 9626 (for instance pins 2 and 8). My question is whether it would be fine to ground the pins labeled RESERVED in the 9626 as opposed to leaving them open or would we potentially run into some problems by doing that.

Thanks

[santo_13]

Please avoid duplicate posts. - https://forums.ni.com/t5/Real-Time-Measurement-and/sbRIO-9627-and-9626-RMC-Connector-Pinout-Compatib...

I would refrain from connecting any of the reserved pins to GND as those might have dedicated publicly undocumented purposes such as the pin42 described in the below snippet.