linux kernel does support broadcom nextreme II 10Gb cards with driver called 'bnx2x'; try lsmod | grep bnx2x to see if the driver is loaded or load manually with insmod bnx2x;
lspci shows you all devices connected to system, while lspci -k shows the same plus the kernel driver used for every device;
all this command are meant to run by a root shell or preceded by sudo
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