I found dockstarter to be helpful to get me going with docker. https://dockstarter.com

You missed the “optional extra” part of the usb3 cable too

I don’t know at all, I have a feeling it’s a bit like a smart error that it’s dying but not yet dead, if you figure out a cost effective fix please let me know, I just avoid looking at my iLO and when I do I end up in a rabbit hole and then remember I don’t care enough to keep looking

I have a similar fault in my dl380 from my searching it can be a fault with the nand and requires a new board to make the fault go away, it’s doesn’t seem to change the functionality of the iLO though just the annoying fault