Two weeks after delivery and I have finally opened the box of my bonus 2-for-1 Neptune.
Just to confirm: my 2-for-1 Neptune is a new machine. It isn't an old Neppy from the Datorhall, there is not a speck of dust.
Ironically, I might have been better off with an old Neppy from the Datorhall, because apparently the new fans aren't as good as the old ones. I don't know yet because I haven't powered it on.
One annoyance: one of the modules is broken. The bolt that secures the heatsink to the case has sheared off from the case (leaving a hole in the case)... meaning that the heatsink is tipped over and not making contact with the ASIC.
Once I get some PSUs, I'll plug it in (4 modules). I'm not buying new PSUs, I will finally switch off some old machines (including a Jupiter and an AntMiner S1) and will use those PSUs. The Jupiter has been running 24x7 since 25th October 2013... it was my first decent miner.