Sorry I had forgot about that. I too am running off an RPi, and just a heads up: you're going to have a hard time finding a hub strong enough that isn't 3.0 to power all six. As a suggestion, get two hubs. I used this thread to help me out https://bitcointalk.org/index.php?topic=253749.0 great info on all the community top rated hubs

The Anker 10 port 3.0 hubs are supposed to be pretty good. 12V 5A

Thanks for the quick response man. So would you say that even with a fan they are still to hot to handle without gloves/protection? I'm waiting on my fan to be delivered, and as it stands I cannot touch them for more than a second without burning myself. FYI I'm running 5 on a rosewill 10 port. 5v 4a should be plenty

Question: how hot are these supposed to run?
I test ran mine while I was in class, and they were hot enough to burn.
Running at 2Gh/s. I guess I just didn't know what to expect.

An AntMiner U2 requires 2.95W at 2Gh/s, per the Bitmain website. That means that you must account for .6A or so for each miner, and leave a little extra to keep the hub from burning out prematurely. Six miners are drawing 3.6A, not to mention whatever the fan is using, clearly putting you above max. I saw your ebay post and assume you're not in the U.S., but for what it's worth I am running five of these AntMiners on a Rosewill 10 port hub as well, but the 5V 4A version. http://bitcoinrigs.org/wp-content/uploads/2013/10/rosewell-10-port-usb-port-2.jpg Got it on Amazon. I also don't suggest you buy another psu and try running your hub with it: if the two are not rated for each other, you're probably going to short out/probably destroy your equipment/probably get shocked/probably start a fire. Good luck man

Your power supply is inadequate. Either your keyboards are wireless and require >500ma from a 5V 1A power supply, or you are using wired keyboards (negligible power consumption for the most part, ~100ma) but the power supply barely meets requirements, i.e. 5V .7A, OR you are running a power hungry peripheral on the other USB port: wifi dongle, hard drive, etc. *I am assuming you have a model B board. Try running your USB devices on a powered hub, and/or buying a better micro usb power supply. Best of luck

Fast delivery, no issues here.
I was pleasantly surprised to see each miner packaged in it's own case.
Thanks man, I'm looking forward to doing business again

Got it. Thanks boss

New to mining. I am setting up a couple of these for the first time on a linux distro. Based on what you have said, does that mean I can skip enabling icarus? i.e. "./configure --enable-icarus"

Paid, pm sent. Thanks

From my understanding after having read through other groupbuys & posts on this forum:
the U2+ is pre overclocked at 2Ghs by default, hardware is identical to the U2. I assume older batches (such as the ones for this preorder) are the original U2 and newer orders come "updated" as U2+.
It's a bit confusing when Bitmain themselves label them as U2+ on their website

PM sent with order, please confirm when you get a chance. Thanks

Just so that we are on the same page, these?: http://i.imgur.com/cNE8M6W.jpg

I am interested in 36 shares. Please message me as soon as possible so we can get started. Thank you

Are these the new U2+ model (overclocked w/heatsink)?