I2C2 port vs I2C board

Hello. I am fairly new to Ardupilot and I have purchased the Cube Orange recently.
Along with the I2C2 port on my Cube Orange I have also received an I2C board.
Will there be a difference between connecting directly to the I2C2port in the Cube versus connecting through the I2C2 board or is the board only for connecting extra devices?
Thanks in advance

the board is just a splitter , you don’t need it unless you need to connect more than one device.

okay
Thank you very much