Bought a 1TB SSD for my son’s gaming PC but his motherboard is 4th gen & the SSD is 5th gen. Return it for 4th Gen? Or keep and run at lower speed?

Purchased the Samsung 9100 Pro 1TB SSD during Prime Days because it was a great price. Didn’t realize his motherboard is 4th gen. Should I return and get a 4th gen SSD or keep it and run to what the max speed will be? Will this cause any issues to the PC? The 4th gen version is slightly more expensive than the 5th gen because of the deal we got. Please advise.