You mean the standoff. Purchase locally could be faster than contacting MSI for an additional one.

https://www.amazon.com/Small-Parts-372411HMA-Aluminum-Male-Female/dp/B07K34RRN1/ref=sr_1_27?c=ts&keywords=Standoffs&qid=1687761348&s=industrial&sr=1-27&ts_id=6909196011