Please see item
1 Port PCI-e to 4 X PCI Expansion Enclosure: Spare PCI-E Host Card
Important note: This is not a graphics card. DO NOT connect this to anything other than a CoolGear expansion enclosure.
Differences between PCIe x1 and x2 cards
|PCIe X1 card visually has both a narrow and wide contact area for the PCI slot||The PCIe X2 visually has two wide contact points for connection to the PCI slot.|