Does the AMD Ryzen 7 9800X3D need an 8-pin connector?
Does the AMD Ryzen 7 9800X3D need an 8-pin connector?
You should be fine. The only reason you'll need more than an 8pin EPS connector to supplement the processor is if you're pursuing a high overclock. That being said, a Google search is telling me that the board you bought has a 12+2 VRM design but I don't see that mentioned on the support site for said motherboard. I would've looked into a higher quality board when pairing with a Ryzen 7 9800X3D.
Make sure you've flashed the BIOS to the latest version before you drop the processor onto the socket.