All, I have a Senior Spacecraft Engineer asking a very specific question about Dell 755mt and the specific PCI bus. I've looked all over Dell's site and can't found an answer. So I'm hoping that someone here might be able to answer or point me to the right information. So here it goes We need to order some (nonstandard) PCI interface cards for these to test our flight hardware. Which PCI bus will these have? We need to pick the right cards so that the interface spec is right. PCI 1.0 versus 2.1 versus 2.3? 3.3 V versus 5 V? I understand the some systems are reverse compatible and 5V will run 3.3V and so on. I need to find the Specific PCI Version of the system board list above. I did find this document http://www.digi.com/pdf/prd_msc_pcitech.pdf sorry in advance if we’re not to post links.