If anyone has looked into this at all, please share!
I haven't looked at the Xilinx specific side of things, however, at the user end of things, One Stop Systems has a nice range of products: http://www.onestopsystems.com/direct_attached_products.php For testing, I have 1. A PCI Express laptop card to PCIe cable adapter http://www.onestopsystems.com/pcie_over_cable_z6.php 2. A PCIe backplane http://www.onestopsystems.com/pcie_atx_bp.php This backplane has a PLX PCI switch on it, that allows your laptop to communicate to a set of PCIe boards. In my case, I can use this to communicate with Altera Stratix IV GX development kits, and in theory, those boards could communicate via the switch too. Cheers, Dave

