If you have another 130W AC adapter to test with, that might establish whether the issue is the dock or AC adapter, but if you would be exchanging both together anyway, that may not matter. It does sound like the dock is bad. However, you should have both Ethernet and displays when using USB-A, FYI. The only things that are different with USB-C are that USB-C can charge the system, and the displays can work differently since USB-C can use both tthe DisplayPort Alt Mode built into USB-C as well as DisplayLink for displays, depending on system capability.

If you end up returning the D6000, you may also want to look at other dock options instead, specifically the WD15 or (if your 5580 was ordered with the Thunderbolt 3 option) the TB16. Both of them always use GPU outputs for displays rather than ever using a DisplayLink chip, which can introduce a number of drawbacks. They can also charge systems with higher power requirements if you order those docks with the higher AC adapter options (180W for the WD15 and 240W for the TB16). In terms of downsides, neither of them support USB-A connectivity if you need that, and the max display configurations are different between the two docks, and both of them are lower than the D6000, although again the reason the D6000 can support triple 4K is because it uses DisplayLink, which is not ideal compared to a true GPU-driven display for a number of reasons.

Thanks for the reply, changing the power adapter did not help so I assume the docking station is bad. I will check out the TB16. Thanks.