@linuxunix - assuming onboard wifi, on the system with the card queried, please run the following in a terminal:
lspci -nn | grep etwork (command starts with lower case "L")
and post the output here.
I suspect missing firmware, as drivers for iwl3945 & iwl4965 are in ScPup64, Fossapup64 & Bionicpup64
(& probably others) so please also run in a terminal on said system:
dmesg | grep irmware
and post the output here.