> The c3600 doesn't have any PCI-X slots (only PCI) as far as I can tell from user manuals. PCI-32/33 device I/O bus PCI-64/33 high-performance device I/O bus <----------------- this is PCI-X, 64bit 5V PCI-64/66 high-performance graphics I/O bus <----------------- this is PCI-X, 64bit 3.3V https://www.openpa.net/systems/hp-visualize_b1000_c3000_c3600.html