Is this normal?

Hello everyone. I recently bought an Antec 550w semi modular power supply. Before I took it out of the store I noticed it looked like some pins (forgive me if that not what they're called) were missing. Though, my Grandpa, a retired electrical engineer, reassured me that it would still work. He told me to double check on here though. Below You'll find some pictures of it.

Is this normal? Should I get another one?

thats normal, the second cable is meant to be used other way around , thats pcie adapter connected to molex cable.To be used if you do not have enough pcie connectors for gpu, unplug it from psu unless you know what you are doing :D

Your Grandpa is correct.

Thank you guys