We have had a batch of 10 DC7700 and they all have 1Gbps cards in running on Cat5e connected to a gigabit switch.. No idea why they are doing this. Iv tried changing the NIC settings "Speed & Duplex" from Auto negotiation to 1gbps and it connects for around 5 seconds then says network cable unplugged.
Any ideas if im missing a setting somewhere?
All the drivers are up to date and i have tried laptops on the same cable and they run at 1gbps without any problems.
Any help will be great.