Connect Tech's PCIe/104 to PCI Express Top Stacking adapter allows users to install any x1, x4, x8 or x16 lane PCI Express card into a PCIe/104 or PCI/104-Express stack up configuration. This convenient adapter board enables the testing and development for standard PCI Express cards in the PCIe/104 or PCI/104-Express environment. Standard Usage This adapter supports any x1, x4, x8 or x16 lane PCI Express add-in card. Simply mount the add-in card to the adapter and install the adapter on the top of a PCIe/104 or PCI/104-Express stack. Once everything is connected, you may begin using the add-in card just as you would any other PCI/104-Express add-in card. No additional configuration is required. Click here to view a list of compatible CPU boards with this adapter.