Is this normal?

[Doppelganger_1]

(Link provides photo of what I'm talking about)
http://imgur.com/xhMs4n0

This PCI connector is missing a metal piece in one of the slots. Is that normal or should I get it replaced?

 

[Lutfij]

What's the make and model of your PSU?

 

[Doppelganger_1]

CORSAIR CS550M

 

[Lutfij]

Read here.

 

[Doppelganger_1]

Thank you for your answer