Hello all, I'm working on a project where I need to use PCI104 to communicate between an EPIC board PC and 4 other smaller boards. If I use only 3 of them everything is ok, but with 4 boards in a stack after a while the communication goes wrong and the EPIC board's sw is frozen. The 4 board's supplier told me that there might be a problem with the power consumption, maybe EPIC cannot source enough so I sourced the 4 boards externally, maybe a little bit better behaviour but still not perfect, the EPIC still can be frozen. Since PIC104 has very weak signal level and works basicly with no end line termination I thought it is rather the signal not the power consumption which might cause the damage; if I exchange the order of the boards than it has an effect on how much time the EPIC board can run without freezing. Any idea, guys?