so it comes underclocked

i think they want from their customers to overclock it and void the guarantee. clever! Cheesy

Exactly!
Check first video of the https://bitcointalk.org/index.php?topic=425019.msg4630770 "Guess who got a HashFast Baby Jet today..."-thread @ 1:37

http://www.youtube.com/watch?v=MoxG2WH3mZM

Letter from Amy:
"...
These machines may be overclocked, however OC'ing will void the warrantee and be entirely at your own risk.
..."