Hi, All I have installed the network card 3C509 on FC1. I used the 3Com config tools (3c5x9config.exe) to set the network card to IRQ 11. It recognizes the network card as 3Com Etherlink III eth0. But I can't activate eth0. Determinig IP information failed. The Linux box is connected with a hub. Cable has been checked with cable tester, OK. Connected to the Internet via another Window PC, no problem. Therefore, the hub is fine. Any suggestion to solve the config problem on 3C509? Change IRQ? Cheers Douglas