So, if you connect something else to that port and it works, why do you think the problem is with the port itself? Have you checked if the switch is doing any VLAN tagging? maybe not all vlans are allowed to the port to X2, or maybe not the native vlan.
I'd say this has to be checked on the switch
- Toss a 'Like' to your fixxer, oh Valley of Plenty! and chose the solution, too00oo -