Backwards PCiE slot?

Vadamo

Honorable
Jul 28, 2013
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so i ordered a motherboard and it works good but there is a backwards pcie x16 slot. Anyone know what it can be used for?
 
Solution
getochkn is right its a PCI slot then. its used for older NIC cards some SATA controllers etc. its been replaced by PCI-e but there are still plenty of expansion cards for it