SF1000 ATX3.0 not 3.1?

Hi guys. I have a question about this new PSU I just received. It says ATX 3.0, PCIe 5.0 instead of 3.1 & 5.1. Is the box mislabeled, or is it old model, or fake?

Hi guys. I have a question about this new PSU I just received. It says ATX 3.0, PCIe 5.0 instead of 3.1 & 5.1. Is the box mislabeled, or is it old model, or fake?