while some users may speak french here, this is a forum intended for international audience, so to get a fast answer and allow other user to profit from this thread please use English the next time
It's a bit of an old card AFAICT, and its not the first time we heard of problems with such cards in a Linux Envrionment.
You could try to get into the debug shell and load its module, or see what the kernel log (dmesg) says about the card:
Code:
modprobe tg3
# the spec of this poweredge tells me also that there should be a 5709 NIC, if you can use this one try:
modprobe bnx2i
# also worth a try (I'm a bit guessing here, tbh)
modprobe bcm590xx