IIRC it's just a standard PC power cable, they're like $5-10 on Amazon or Best Buy if there's one near you.
https://www.amazon.com/AmazonBasics-Power-Cord-6-Foot-Black/dp/B072BYGKZZ/ref=sr_1_2?dchild=1&keywords=ssf+computer+plug&qid=1611802341&sr=8-2 this would be what you are looking for based on what i know