Which USB hub to use with Block Erupters | NanoFury NF1 | BPMC Red Fury | Ant U1

[Trongersoll]

My D-Links are still running strong after 1 month of 24/7 hashing in an ambient temperature of 26C-29C.

I've got some d-links on order. just waiting for stuff to get here.

[semaster]

BIGTec 10-port works fine with all 10 port when there is enough power supply
I used internal computer PSU to power up this hubs

[noncecents]

Ghetto cooling duct here again.

Hard a go are re-flowing the solder on the USB hub that had about half the sockets not working and gave it a +5V power trace augmentation, but I think I may need to replace the sockets.  Or wait until I have a reflow workstation (thank your element14 Father's Day specials).  Also ran into problems with comms errors, decided I should measure the +5V at one of the miners, it was down to 4.90V at the miner, with 5.16V at the PSU, so I adjusted the PSU voltage up to 5.4V (5.06v at the same miner), and the comms errors stopped.  Two more hubs on their way from DX.com for modification (along with some 3300uf 16V caps to repair an ATX PSU with a 45A 5V rail), though I may just get a 5V 30A supply instead, since the voltage can be adjusted up to compensate for ohmic losses.

Why don't you just buy hubs that work?

They cost more money but in the time you're waiting for new hubs and re-soldering them you could be mining.

[peasant]

Considering the crazy diff increases you can't lose mining time.

[colemab]

A tried, tested, and true hub solution with the lowest possible cost-per-port.  

Current price: 0.39BTC = 45.75 USD

45.75 / 13 = 3.519230769230769

Not quite sure that is the 'lowest possible cost-per-port'.  Several in the table at the start of this thread beat this price per port.  However, I have to admit that this is a very convenient form factor at a reasonable / competitive price.

[Beastlymac]

I have been using a d-link hub and it has worked well for me.

[Trongersoll]

I got 3 d-link 7 ports today. oddly, i couldn't get them to run more than 4 in each.

I've got some other ports in transit. I've got 7 erupters without ports still. aaaaahhhhh!

[Nemo1024]

Are they plugged into another hub? D-Links are organised internally as two chained 4-porter hubs. I have 10 of them and they all run 6 BEs each, provided they are fed with a powered USB in addition to AC adapter; otherwise 5.

By the way, mc_lovin sent me a pic of his D-Link setup. Hope it's OK to share with the rest:

[Trongersoll]

Are they plugged into another hub? D-Links are organised internally as two chained 4-porter hubs. I have 10 of them and they all run 6 BEs each, provided they are fed with a powered USB in addition to AC adapter; otherwise 5.

By the way, mc_lovin sent me a pic of his D-Link setup. Hope it's OK to share with the rest:

They are all plugged into cards in the computer. I think the cards don't give enough extra boost with more than one hub in them.

[Nemo1024]

Try to plug 3 hubs into the leftmost 3 ports of another D-Link hub and see if these 3 will run 6 BEs each. I have 7 D-Links feeding off anST-Lab/Rosewill.

[aurel57]

Ghetto cooling duct here again.

Hard a go are re-flowing the solder on the USB hub that had about half the sockets not working and gave it a +5V power trace augmentation, but I think I may need to replace the sockets.  Or wait until I have a reflow workstation (thank your element14 Father's Day specials).  Also ran into problems with comms errors, decided I should measure the +5V at one of the miners, it was down to 4.90V at the miner, with 5.16V at the PSU, so I adjusted the PSU voltage up to 5.4V (5.06v at the same miner), and the comms errors stopped.  Two more hubs on their way from DX.com for modification (along with some 3300uf 16V caps to repair an ATX PSU with a 45A 5V rail), though I may just get a 5V 30A supply instead, since the voltage can be adjusted up to compensate for ohmic losses.

Why don't you just buy hubs that work?

They cost more money but in the time you're waiting for new hubs and re-soldering them you could be mining.

I am trying to get away from the high hub cost. Most that buy the Acker hubs cost about $60 each so they have a cost of $120 to run 20 miners ( $6 per port).  I have about $8.50 x 3 hubs+ $30 PSU + $15 barrel connectors = $70.50 and am running 25 miners. Using cheap 10 port hubs, 5v 20a PSU I have my cost below $3 per port. This may not seem like a big deal until we all start to run 100 USB miners and a person having to find enough outlets to plug all those wall adaptors into.

[colemab]

I am trying to get away from the high hub cost. Most that buy the Acker hubs cost about $60 each so they have a cost of $120 to run 20 miners ( $6 per port).  I have about $8.50 x 3 hubs+ $30 PSU + $15 barrel connectors = $70.50 and am running 25 miners. Using cheap 10 port hubs, 5v 20a PSU I have my cost below $3 per port. This may not seem like a big deal until we all start to run 100 USB miners and a person having to find enough outlets to plug all those wall adaptors into.

If you have big power blocks and need to plug a bunch in, forget those normal power strips and get one of these:

http://www.lowes.com/pd_125292-16503-UTPBS010_0__?productId=1214065&Ntt=workshop+surge+protector&pl=1&currentURL=%3FNtt%3Dworkshop%2Bsurge%2Bprotector&facetInfo=

[visdude]

I suspect that we are stressing these more than the average user. I'll bet the designers never anticipated these running 24/7 drawing full current.

No doubt.  We are indeed maxing them out.  We're so hell-bent and focused on getting the lowest possible cost per port that we have forgotten the fact that PSU efficiency peaks at 50% load and deteriorates as it strays north or south (more so towards the south) of this mark which means more heat generated and more wattage drawn off the wall.  That's why I have scaled down my setup to five miners for each 7-port hub that are powered by 4A bricks to get closer to 50% load.  We don't have to fill all the ports up.  Fifty to seventy-five percent load is ideal.  Less heat, less wattage and extends the PSU's life.

Edit:  I have to admit that maxing them out was fun.  It is also important to initially do it to determined if the units are rated as advertised; similar to benchmarking a newly built rig.  We don't benchmark our rigs for as long as it's able to, do we?

[visdude]

Ghetto cooling duct here again.

Hard a go are re-flowing the solder on the USB hub that had about half the sockets not working and gave it a +5V power trace augmentation, but I think I may need to replace the sockets.  Or wait until I have a reflow workstation (thank your element14 Father's Day specials).  Also ran into problems with comms errors, decided I should measure the +5V at one of the miners, it was down to 4.90V at the miner, with 5.16V at the PSU, so I adjusted the PSU voltage up to 5.4V (5.06v at the same miner), and the comms errors stopped.  Two more hubs on their way from DX.com for modification (along with some 3300uf 16V caps to repair an ATX PSU with a 45A 5V rail), though I may just get a 5V 30A supply instead, since the voltage can be adjusted up to compensate for ohmic losses.

Why don't you just buy hubs that work?

They cost more money but in the time you're waiting for new hubs and re-soldering them you could be mining.

I am trying to get away from the high hub cost. Most that buy the Acker hubs cost about $60 each so they have a cost of $120 to run 20 miners ( $6 per port).  I have about $8.50 x 3 hubs+ $30 PSU + $15 barrel connectors = $70.50 and am running 25 miners. Using cheap 10 port hubs, 5v 20a PSU I have my cost below $3 per port. This may not seem like a big deal until we all start to run 100 USB miners and a person having to find enough outlets to plug all those wall adaptors into.

My setup is composed of 7-port hubs and 4A PSUs (all are already listed on OP and discussed on these pages) for a total cost of $12.20 per set and are very capable of running the maximum number of miners (7) per hub which yields $1.74 per port without having to go through the gymnastics that you did or are still doing.  As I've mentioned on a prior post, I've scaled it down to five miners per hub to bring it closer to 50% load (PSU peak efficiency).  Even at 5 BEs per hub, the yield would still be at a reasonable $2.44 per port.

I bought a bunch of 5-ft extension cords with three outlets (two on one side and one on the opposite side) and 6-outlet power strips from the 99¢ Only Stores.  All of them are rated 13A (1560W) and each costs...you guessed it -- 99¢ each.  Every extension that is plugged into an outlet on the power strip can provide power to three power bricks or two wall warts...and so on and so forth.  Did I mention that each of them (extension cord and power strip) only cost 99¢ each?  Do the math.

[visdude]

I am trying to get away from the high hub cost. Most that buy the Acker hubs cost about $60 each so they have a cost of $120 to run 20 miners ( $6 per port).  I have about $8.50 x 3 hubs+ $30 PSU + $15 barrel connectors = $70.50 and am running 25 miners. Using cheap 10 port hubs, 5v 20a PSU I have my cost below $3 per port. This may not seem like a big deal until we all start to run 100 USB miners and a person having to find enough outlets to plug all those wall adaptors into.

If you have big power blocks and need to plug a bunch in, forget those normal power strips and get one of these:

http://www.lowes.com/pd_125292-16503-UTPBS010_0__?productId=1214065&Ntt=workshop+surge+protector&pl=1&currentURL=%3FNtt%3Dworkshop%2Bsurge%2Bprotector&facetInfo=

It's a very expensive solution.  I am able to provide power to a dozen of the largest wall warts around or eighteen power bricks for a mere $6.93 from a single wall outlet.  I could daisy chain this setup up to a maximum of 1560W AC (13A), still from a single wall outlet.  See my prior post above.

[aurel57]

[colemab]

I am trying to get away from the high hub cost. Most that buy the Acker hubs cost about $60 each so they have a cost of $120 to run 20 miners ( $6 per port).  I have about $8.50 x 3 hubs+ $30 PSU + $15 barrel connectors = $70.50 and am running 25 miners. Using cheap 10 port hubs, 5v 20a PSU I have my cost below $3 per port. This may not seem like a big deal until we all start to run 100 USB miners and a person having to find enough outlets to plug all those wall adaptors into.

If you have big power blocks and need to plug a bunch in, forget those normal power strips and get one of these:

http://www.lowes.com/pd_125292-16503-UTPBS010_0__?productId=1214065&Ntt=workshop+surge+protector&pl=1&currentURL=%3FNtt%3Dworkshop%2Bsurge%2Bprotector&facetInfo=

It's a very expensive solution.  I am able to provide power to a dozen of the largest wall warts around or eighteen power bricks for a mere $6.93 from a single wall outlet.  I could daisy chain this setup up to a maximum of 1560W AC (13A), still from a single wall outlet.  See my prior post above.

I already had this unit installed for other reasons so I didn't buy it for this setup alone.  I originally installed it to remove my previous daisy chain power strip setup and get a cleaner look.  It just so happened to have 4 ports free and so it was cost neutral to me.  Your setup is the cheaper way to go for sure but long term (i.e. for more than just bit coin mining) I prefer the cleaner look this yields.  Anyway, to each is own and thanks for sharing your setup.

[jago25_98]

UK feedback. 3 hubs. All bad so far.

ebay item: 221225637173
feedback: My fault- not quality for demanding ASIC; produces errors.Hard working seller
name: KDQ4UK Plug 7 Port USB 2.0 High-Speed HUB Powered + AC Adapter Cable SPC-0135-UK

290954012684
PSU DoA.Open to find 0.5mm wire for 240v.Bin chinese quality. Good seller though
7 Port Mains USB 2.0 BUS Powered HUB AC Adapter PC Laptop Silvery UK

400541403960
D-LINK DUB H7 - HUB - 7 PORTS - HI-SPEED USB
Need to update description to "2 USB ports active powered, 5 unpowered"

Currently on order, hub no.4.
190892067227
7 PORTS USB HUB use in ASICMINER USB Miner with Power AC Adapter

[Nemo1024]

400541403960
D-LINK DUB H7 - HUB - 7 PORTS - HI-SPEED USB
Need to update description to "2 USB ports active powered, 5 unpowered"

Then you are doing something wrong. Have you plugged it into your computer?
Several people, myself included run 6 BEs on D-Links (see linked reviews in OP). The two charger-ports you are referring to are powered when the hub is in the charger mode, that is, when it is not connected to the PC. Otherwise, all 7 ports are powered, but it's AC adapter has enough juice for 6 BEs.

[visdude]

I am trying to get away from the high hub cost. Most that buy the Acker hubs cost about $60 each so they have a cost of $120 to run 20 miners ( $6 per port).  I have about $8.50 x 3 hubs+ $30 PSU + $15 barrel connectors = $70.50 and am running 25 miners. Using cheap 10 port hubs, 5v 20a PSU I have my cost below $3 per port. This may not seem like a big deal until we all start to run 100 USB miners and a person having to find enough outlets to plug all those wall adaptors into.

If you have big power blocks and need to plug a bunch in, forget those normal power strips and get one of these:

http://www.lowes.com/pd_125292-16503-UTPBS010_0__?productId=1214065&Ntt=workshop+surge+protector&pl=1&currentURL=%3FNtt%3Dworkshop%2Bsurge%2Bprotector&facetInfo=

It's a very expensive solution.  I am able to provide power to a dozen of the largest wall warts around or eighteen power bricks for a mere $6.93 from a single wall outlet.  I could daisy chain this setup up to a maximum of 1560W AC (13A), still from a single wall outlet.  See my prior post above.

I already had this unit installed for other reasons so I didn't buy it for this setup alone.  I originally installed it to remove my previous daisy chain power strip setup and get a cleaner look.  It just so happened to have 4 ports free and so it was cost neutral to me.  Your setup is the cheaper way to go for sure but long term (i.e. for more than just bit coin mining) I prefer the cleaner look this yields.  Anyway, to each is own and thanks for sharing your setup.

If you have them already, then it's a moot point.  I was originally considering the long power strips but it was a bit pricey for me especially considering that I needed at least two of them initially and had to resort to a cheaper solution.  A cleaner look is just a matter of cable management.  In fact, with the 5-ft extension cords, I actually have more flexibility in organizing and setting up the placement of the hubs.  I'll try to post a photo of the cable management with my cheap solution as soon as I get chance.