I bought a 49 port usb hub and a mean well to 5V ATX cable adapter from Eyeboot/Klintay on separate orders.  Both products were received in good working order and shipping was very quick.  Communication was prompt and in good english. 

Would not hesitate to buy again.

Website down for a while now.  Looks like these guys are out of business.

A few pics of the custom cable and the 49 port hub.  My own cables (... that I made myself) had a problem and one of the wires came off the 24pin connection.  Ordered from Klintay as it was cheaper vs. making on my own again. Anyway, seems to be good to go again.  Cheers.

As a follow up.  I now have 49 usb antminers (9 U1 + 40 U2) running on the 49 port hub.  Dunno if anyone has confirmed it yet.  Running good!  Fun to see all the LEDs blinking away.  Lots of space for the U2's for cooling.

The voltage adjustment on the meanwell supply makes a bigger difference with 49 miners.  You just need to be comfortable with a bit of electrical work.  The 5V wires do get fairly warm when you run about 200W, so I tried to point the meanwell fan to cool the wires too.

If anyone's looking for a PSU to keep things simple and avoid any electrical work (ie. meanwell).  I have a couple of used ATX PSU's rated at 5V@47A listed on ebay for sale.  Just search for PSU 49 port hub.

Also noticed that Minersource has these hubs for $140 and U2 miners for $12 now.  Not bad. Last time I checked though shipping costs to Canada from these guys is very bad, as they don't have USPS economy shipping.  Probably better within US.

U2 ship to Canada?  Cost?

Nice job on the custom cables!  It's hard to beat on price point.  Would buy if I didn't already make my own.

Was able to use a stock 24 pin 18 AWG 30 cm extension cable (ebay $7.50 USD shipped  or $10 CAD local) + a $4.00 CAD termination mixed pack from Lowes.  As a note, be aware that the connection/termination parts shouldn't be over 8mm diameter to fit into a meanwell power supply terminals.  Also when hooked up, it's always on, no matter the position of the power switch, unless you pull the power on the meanwell supply.  You also need to be very careful about which cables you terminate together and where.  No biggie if you double check everything.  Also with the meanwell, when adjusting the voltage, don't push too hard on the adjustment dial with your screw driver.  I pushed too hard and broke the connection.  Luckily I was able to reconnect by pushing back down.

My meanwell with power factor correction (99% pf) and voltage adjustment to 5.2 V was able to save 10% of power usage over an ATX supply with 35 usb antminer sticks.

I do have an older 500W ATX rated 47 Amps at 5V connected now with about 35 usb miners.  My usb meter is showing 3.95 Volts at the usb and 150 Watts on the wall.  Hashing fine, but getting a little scared if more the voltage will drop even more, causing the amps to go up causing more heat then is really necessary.

With a newer ATX, might get better voltage regulation but most newer ATX's have low 5A ratings.

Found a Meanwell SP-320-5 for $33 USD on ebay.  Hopefully the voltage can be cranked up nicely.

Found a 18AWG for $750 USD also on ebay.  Should be okay for the load.

Just got the usb fan today.  It's totally different from the photo on your website.  Not similar in look at all.  This is a fact that could have been stated on your reply above.

The one shown on your website has a 7 rigid blades and the usb fans that I received are cheap 2 foam blade type which are popular on ebay, dx.com, merit line, etc which go for $2.50, compared to the $6.00 you are charging.  Not very happy about this.  If you accept return, I will be on the hook for shipping both ways with amounts to over the cost of the 3 fans that I bought from you guys.

Looking at buying a power supply like the Meanwell switching power supply on ebay, which seems to be cheaper when you consider shipping to Canada, which is usually cheap from China vs. the US.  Any one have any advice if I should risk it with a no name brand ($35.50 CDN) vs. the Meanwell ($57.50)?  The 5V 60A unit should be pretty oversized for my needs, so buying a cheaper ac/dc transformer might be okay, so long as it not DOA.

My existing ATX is rated high enough but the voltage goes down to about 4 volts when loaded up and my USB antminers (2 gh/s) are running at about 0.75 amps each.  I'd like to get the voltage up to 5.25 and get the amps down for better efficiency.

Any ideas for cable?  I'm looking at a 24 pin 18AWG extension cable for under $10 then hacking it up for red & black wires only and installing the ring connectors.  Can't find too many places that offer 16AWG wire for an extension cable.  Might have a lead at "Shakmods" in the UK, but might be expensive to ship.

Any ideas for the power cord to the plug?  I'm looking at cutting off the cable from a old power bar.  Anyone know what the minimum wire size should be?

About the wires, there are 5 red and 8 black.  Does anyone know if some of the black cables are not used by the hub?  You would think the wires in would match the number of wire out.  I just think that 8 black wires is overkill if there are 5 red going in.

Anyone know if the current will be balanced on all 5 reds?  Is there some kind of 5V bus on the hub going in, or does each red wire feed specific ports only? 

If anyone has any questions for me, I'd be happy to answer.  I've got a raspberry pi running a bunch of U1 (~9) and U2 (~23) ant miners on the 49 port hub.  I've also got a kill-a-watt and a usb meter with voltage and amps display. 

But what is your cost to ship to Canada?

I can confirm the d-link 7 port (3 amp rated power supply) or the rosewill/Ican 10 port (3.5 amp rated power supply) will work with 5 U2 antminers clocked at 2.0 gh/s, at least with bfgminer/minepeon/raspberry pi.  I had both hubs with 5 usb antminers each.  The rosewill also had a usb fan and is daisy chained to the d-link hub.

At 2.0 gh/s you should assume for 0.5 amps at 5V, then minus one miner for your safety factor.  If your power brick gets hot then back off with another miner till it's just warm.

I just got a 49 port dipo hub, so if you want, I could offer the d-link or ican up for sale.   Probably best if you're in North America for reasonable shipping costs.

Tried out Bitminter for a week or so, but it took to long to solve blocks.  The rewards were nice (double Slush's), but I grew impatient when it took over 12 hours to solve a block.  I found Slush's pool better for daily gratification. There is always at least one block going through the 120 confirmation cycle, which amounts to the proverbial carrot at the end of the stick.  I got impatient cause there was no carrot at Bitminter.

I get minimal rejects and error rate at 2 gh/s but when I overclock past 2 gh/s i get error and rejects which negate the overclock on bfgminer/minepeon.  This is for both the U1 and U2.  Is this normal? I've been running at 2 for a while now and happy with very small rejects and error.  It would be nice to ramp up to 2.2/2.4/2.6 with under 5% error though.  I have a fan and the heat sinks are cool to the touch.

What is the cost for shipping to Canada? FYI - I can get a U2 shipped to Canada for $30.79 USD$ on ebay right now from user bitcoinpal.

Can I pay in CDN$ since you're a .ca website and ship from Canada?  Is your usb fan made by the same factory as the arctic breeze?  Where did you specifically source the usb fan?  Can't find a similiar fan to compare specs and cost.

Thanks!

Hello Miners.  I just wanted to share my experience so far with the new Klintay/Dipo/Eyeboot 49 port hub.  I was recently burned on a group buy on a U2 Antminer, so I was a bit weary of another buy.  Still wanted the 49 port hub though, as I didn’t like the fact that I was maxing out my USB hubs making the power bricks run quite warm and it was a messy layout.  Paypal was accepted (even in CDN $) for payment so at least there was some insurance to dispute the charge if things went south.  Looks like the seller had some history with actually delivering the smaller industrial looking hubs, so I was hopeful.

Payment was sent late the evening on March 25.  Package was dropped at Hong Kong post office on March 27.  A tracking # was given the same day.  Package arrived at door in Calgary, Canada April 2.  Past experience with shipping from Asia indicates that this was pretty fast shipping!  (This was for the registered/tracked regular/non-express shipping option)  For reference: I'm still waiting for some cheap ebay nick-nacks from China that were ordered March 18.

Package acceptance process required a signature and ID.  Was very happy and surprised to find that no customs duties were charged by Canada Post at all.  The package honestly stated a $180 USD value.  Usually the minimum $5 brokerage and Canada sales tax applies on packages over $25.  There is an exception on duties for computer parts though, so I guess they waived the rest.  What ever happened, it worked for me!

The shipping package was large.  At least triple the size of the actual box of the hub.  Though, the shipping box was filled with cardboard spacers to prevent too much clunking around.  The actual box was the same as the photos with no markings, a plastic handle and nicely cut foam inserts for protection.

Initial inspection showed a nice product.  Same as photos, with flashy orange-yellow colour.  I did find a missing top metal nut on the front panel, but found the nut in the plastic bag that the hub came in.  It was easily attached back by hand.  The rest of the nuts were tight.  Perhaps this one was not fully attached at the factory and came loose from the vibrations during shipping in numerous modes of transportation.  The included translucent blue USB cable was separate from the hub box, so it was probably added on from the seller.  It seems of good quality and a good length as well.  

Now connecting … drum roll please.  It works!  I fired up my Raspberry Pi with a newish version of Minepeon running BFGMiner.  I’ve got nine U1, one U2 and one Arctic Breeze USB Fan connected to the hub, it’s powered by an EVGA 600W PSU with a 20 Amp 5V rating.  I know it’s under-rated if I want to load up the hub, but it’s sufficient now.  Overclocking the miners has mixed success, as soon as I go to 2.2 GH/s and above, my error rates go to 10% and up.  This negates any overclocking benefit.  Though I must admit I didn’t have much time to play with overclocking.  So far I’m happy to get 2 gh/s per unit and next to zero errors.  This is probably normal and not a caused by the hub, as I had similar results with other hubs.

Future plans?  I just found a couple of salvaged no-name PSU’s that are nameplate rated 47 Amps on 5V (500 W max total unit), so I plan on using this bad boy PSU if I manage to collect some more USB miners.  I’d also like to install the hub vertically on my basement wall to open up space on the floor.  Looking forward to an even  cleaner looking install.  Cheers.

Edit: There seems to be a nice spacing for the U2 Antminers.  I only have one so far but it looks like enough room to start filling out the hub with fans facing down on them.

+1 for JonesGear on both their website and via Amazon.  Very quick ship.

There's also a bit of a price war going on ebay now with different sellers (well ... prices are getting more realistic I guess) for U2 Antminers, as I imagine a lot of people's MOQ orders came through from BMT and looking to sell off stock quick.  I see U2's going for $31 when you include shipping to US and about $35 to Canada.

Official retailers - That charge the non-profit price:

http://www.raspberrypi.org/faqs#buyingWhere

I bought a half dozen from these guys.  Very good service.

http://www.newark.com/raspberry-pi/raspbrry-modb-512m/model-b-assembled-board-only/dp/43W5302

Also recommend these guys too for Pi stuff:

http://www.thepihut.com/

Payment just made via Paypal with CAD$ as per PM details.  Hope to hear from you soon!