This Break Out board interfaces to FMC-RSxxx, through a Samtec cable as shown below. It provides 8 DB9 to interface to the outside RSxxx .
FMC0RSxxx-DB9 break out board with 9 DB9 connectors
FMC-RSxxx-cable Samte cable to connect BO board to FMC-RSxxx module.
![](http://www.sundancedsp.com/wp-content/uploads/2021/11/FMC-RSxxx-DB9-1.png)