Hi, I know that smaller PCIe cards (ex. a PCIe x1 card) will work in a higher slot (ex. a PCIe x8 slot). However, I have heard that sometimes you can put bigger cards into smaller slots, and the PCIe protocol will just negotiate a lower number of lanes. This seems to be at least partially true as the PCIe x4 slot on my motherboard does not have a back (so a PCIe x16 card would physically fit into it.). I wanted some clarification on this. The reason I want to know is that I have a rocketraid 2320 (PCIe x4) and wanted to know if I could put it in a PCIe x1 slot (I am willing to get a dremel and have at it.) - so if anyone knows about this in particular that would be awesome. Thx!