My new rig, fresh from customs office.
it's not working yet, I think I have to connect power

What did the guys at the Zoll say about that BFL?

roughly this:
customs girl: "What is in this package? What's so special about it?"
me (surprised): "It's a Bitcoin Miner, basically a computer"
customs girl: "Excuse my ignorance, but can you explain what it does"
me: "Uuurm. It makes calculations, mining Bitcoins"
customs girl: "So it's a computer?"
me: "Yes, has chips in it and a power supply and stuff"
customs girl: "You'll have to open the package and show me"
me (opens package): "See, a power supply, and this black box is the computer with chips in it"
customs girl: "I see, yes, ok. One computer. You'll have to pay 19% import VAT tax and probably customs duty".
customs duty turned out to be 0%, 19% VAT I had to pay as expected.