Could probably find it here using the search function: https://www.alliedelec.com/product/nichicon/rl81c221mdn1kx/70188101/?gclid=Cj0KCQiA37KbBhDgARIsAIzce15ln-EcvUwYV3ceoc1OC1ZFUPLYTCj30eOxEDAvn8Pj5Prq-7y3XHUaAukwEALw_wcB&gclsrc=aw.ds
If not ask for the schematics for the node board or inquire about its specs (uf/voltage/type) with the manufacturer. Give them the board location and go from there.