PowerFlower, are you able to access the operating system? I would like to know if the LAN port #1 is working correctly.
Which is the current BIOS version of your system? Just in case, BIOS v0033 fixed an issue relate with the behavior of the LAN port under DOS.
We can also help you to replace the unit if you continue having this issue. Please get in touch with our Warranty Department, remember to ask for the higher revision available Contact Support