Topic: >>10 port powered USB 2.0 hub $14.99 + A Very good selection of USB Hubs for BTC (Read 7163 times)

What could happen if I don't scrub the connection? I've done the +5v mod to all ports and the hub will work for a couple of hours but then it'll drop out and the block erupters stop mining. The only way to fix it is by unplugging the hub from the PCs USB port and plugging it in again. Could this be caused by not scrubbing the connection?
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you need to scrub it or cut the red wire on your usb cable.
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Sorry to ask, but, what if I scrub and solder the right diode in there?
What kind of diode (rating, voltage, etc) do you think it should be ok?

BTW, I don't have that that Capacitor near the power plug... What's his ratting?

Thank you!

shameless bump 

If anyone has a specific hub or piece of networking equipment they are looking for please PM me the manufacture and model number and I will see if my supplier has it.

I just put up some networking equipment for those that have asic blades.

$28.99WD My Net Switch - 8 Port Gigabit Network Switch
https://www.bitmit.net/en/item/67822-wd-my-net-switch-8-port-gigabit-network-switch-free-2-day-ship


$24.99TP-LINK TL-SG1005D 5-Port Gigabit Switch
https://www.bitmit.net/en/item/67820-tp-link-tl-sg1005d-5-port-gigabit-switch-free-2-day-shipping


$17.99Black 100FT CAT6 Network Cable
https://www.bitmit.net/en/item/67816-black-100ft-cat6-cat-6-rj45-network-cable-100-free-shipping


$9.99Blue 50FT Cat6 Network Cable
https://www.bitmit.net/en/item/67815-50-foot-50-cat6-rj45-network-ethernet-lan-cable-blue-free-ship


$16.995-Pack 5ft Cat6 Snagless Ethernet Cable
https://www.bitmit.net/en/item/67818-5-pack-cat6-snagless-ethernet-cable-free-2-day-shipping

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What could happen if I don't scrub the connection? I've done the +5v mod to all ports and the hub will work for a couple of hours but then it'll drop out and the block erupters stop mining. The only way to fix it is by unplugging the hub from the PCs USB port and plugging it in again. Could this be caused by not scrubbing the connection?
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you need to scrub it or cut the red wire on your usb cable.

I use the Anker hubs with a Jally connector from Cablez (do a user search), plugged into a PCI-E connector. Seems overkill, but I have no problem with it, and it will provide power for 10 block erupters easily. No need to worry about some crap powerbrick not providing enough power for you. You can run multiple hubs off a PCI-E connector with splitters.

What could happen if I don't scrub the connection? I've done the +5v mod to all ports and the hub will work for a couple of hours but then it'll drop out and the block erupters stop mining. The only way to fix it is by unplugging the hub from the PCs USB port and plugging it in again. Could this be caused by not scrubbing the connection?

The Rosewill RHB-500 usb hub is back in stock. There was a small price increase to account for my supplier raising their price. If/when my supplier lowers the price I will lower my price.

$28.99Rosewill 10-Port USB 2.0 Hub RHB-500 5v 4a
https://www.bitmit.net/en/item/66773-rosewill-10-port-usb-2-0-hub-rhb-500-5v4a-free-2-day-ship-asic

Yes, price is the same. They ship directly from my supplier so I can't really get them without the power adapters.

Maybe we can start this as another topic for modding the USB hub. lol
Meanwhile back to topic, can I get 2 hubs without adapters? The price is the same?

Yes thats right, its to prevent feeback. close the loop
HUB will not power on its own after this.

not both, one or the other.

As it happens I have the same hub, I removed the power supply from its cable and soldered in a molex to ground and +5v. No issues plugging the molex into my machines PSU and the hub into the PC. I can run 10 BE's for an hour or so but then they'll drop out.

Next up I'll try mijanur's suggestion to solder cable to the +5v line, but I don't understand the need to solder the ground and scrub the connection. Is this to stop power from the +5v line going back through the PC's USB port? Wouldn't I have seen the result of this after it being plugged in for days? Also, wouldn't this mean without any mods, the power from the external power supply would be going back through the computers USB port?

So connect all the +5v with a wire and do the same on the ground side?

Thank you for the guide on how to do it. I'm always itching for a reason to open up something and tinker with it. I will prolly do this mod to mine soon.

The pcb on these boards are too thin..

heres what i have been advised by a member here "solidbitshop"

You have to make some soldering.
The 5V line on PCB is too thin and only on one side. It will lead to massive heat on the PCB it will burn or melt causing massive surcharges, and many other bad things.

PS> I suggest desoldering the power connector from PCB you will have room for a wire and can close it in case. Tear one of the plastic thingy that go trough hole on PCB and that way you will have a hole to put wire trought.

You have to solder a wire to red circles (on the photos) that would be +5V, and another one GND(0) to the black ones (either will work)
As You can see there is no diode Y4 preventing power to go back to PC, and the circuit connecting it is solid, You will have to scrub this thin CU layer in brown line, after You do that check with multimeter if there is any connection left.

Once You solder the wire, put a mulimeter (current meter) in it and check what is the current of powered device. If its no more than 500mA - 1A you are good to go. Plug in some Erupters and check the current with all 10. It should be arround 6A of current when plugged 10 devices.

Leave it for some time to see if everything is ok, take out multimeter from it and connect it direclty to PSU.

Now check the Voltage on USB port. Its better to do when you connect all 30 of them.
Connect them to PSU turn them on, now put one prope to a +5V on the errupter USB the other one to its cover.
If its more than 4.5 You are good to go, if no adjust PSU to more than 5 V (5.5V is max I think on the PSU) so the eruptors are close to 5V.




these psu should replace those excess plugs
http://www.amazon.co.uk/Switching-Power-Supply-Transformer-Driver/dp/B008DFBIYQ/ref=sr_1_2?ie=UTF8&qid=1380488192&sr=8-2&keywords=220V+DC+12V+5A or something similar

The Rosewill hubs are currently out of stock but I have some new 10 port hubs at that price point. The Rosewill hubs should be back in stock soon.

Good to hear 

I contacted Rosewill. They are sending out a replacement power supply. Thanks for your help.

I can set up an exchange with my drop shipper if you would like. PM me for details.

I just jinxed myself. One of the power supplies just died for the Rosewill 10-Port hub. I only had 8 miners plugged into it. It died in less than 8 hours.

Just got my Rosewill hubs. I'm running 8 on each. I tried 10 miners but it was a no go. I can do 8 with a fan and 9 with an external fan.

Almost 24 hour stress test and still working just fine. These $14.99 hubs handle 4 usb asics.

I think I would still recommend getting the Rosewill if you have the extra $10 since they can handle 10 usb asics out of the box. Only $25.99 in my bitmit store.
https://www.bitmit.net/en/item/63466-rosewill-10-port-usb-2-0-hub-rhb-500-5v4a-free-2-day-ship-asic

Erm, just to clarify, the 4A and 8A adapter cost 17-26USD itself and it's sold separately.

I personally did a test on stock BE. If running on 1 stock BE on a laptop, it uses 90mA. When I load the 2nd stock BE, it becomes 240mA. So it takes about 150mA for a stock BE that is in mining state. A USB 3.0 port will not power more than 1 OCBE (to 448MHz, and i havent try stock BE).

The next thing I wanna try is to use switching power supply 5V 60A to power 3 of these hubs. and see what happen lol (hopefully no explosion)

Back to topic, this hub sells 15SGD cheapest here. Yours is 3SGD more but with delivery. But when I need it, it really means i needs it now. haha.

I havnt tried that yet personally but I believe it allows you to run it without the power supply. You are probably right about it robbing some power from the usb port.

Has anyone made adapters to run hubs off of an old computer power supply? Like 12v to 5v converters. I know you can take 5v right off of a computer psu but I'm thinking of ways to hook these hubs up to my Litecoin mining rigs without chopping wires. lol

Something like this. (12v - 5v3a 15w dc/dc converter)
http://www.alibaba.com/product-gs/1265119511/DC_DC_Converter_12V_Step_down.html

I can sell those for between $10-12 depending on what supplier I go through. If anyone has an interest in them please let me know.

Does the hub work at all if you plug it into the host port without using the wall-wart power adapter?

Some of these hubs will steal some host port power and supplement it with the wall-wart supply. You can tell yours is like this if it functions at all without the wall-wart. That would explain why it runs 4, kinda...

The one I ordered for myself came in today.

The psu says 1,000ma which is 1amp, yet its running 4 usb asics just beautifully, I haven't tried 5+ yet as I have the rest hooked up in my Old Trunk rig, I'll stress test it for the next 12 hours or so with 4 then add another one and see how it does.

Ok, just tried 5 and no, 5 on the stock power adapter is a no go. lol

It does 4 just fine, I will update this thread if I notice any issues during burn in.

$14.99 is still good for a hub that will run 4 usb asics stock. It just needs a $8-10 upgrade to a bigger psu to handle more usb asics as ElitePork demonstrated earlier in this thread.

Its good to know that I was right about using a beefier power supply.
I'm sorry to hear that you melted one, I'm betting that hub had a dead short inside.

Yup. I did not buy any from you. I got the USB hub from a local electronic store and "sometimes" it comes with 1A adapter. Sometimes it doesn't.

The store that sells the 4A adapter "BS" me saying I turn it on 24/7. Saying it's not supported to use 24/7. Lucky it's a lady or i'm gonna give her a piece of my mind.
So I asked for a higher amp adapter and they gave me 8A.
Plug in 7 OCBE and the DC connector melted.

Final form,

Though I have some re-arrangement with the BEs. But all 4 hubs are running with 8A 5V adapters

how does the adapter melt? There would have to be a dead short for that to happen and then I'm amazed you didn't just trip the power strip b4 it melted.

Just to be clear, you haven't ordered anything from me. None of the $14.99 hubs have even been delivered yet. lol

Tried 4A adapter with them and the adapter melted. 4A adapter cost about 17.5 USD

Then I got 8A adapter to use with them and the DC connector on the USB hub melted... 8A adapter cost about 26.20 USD

Thank you for the order. If you have any problems just let me know. 

still selling, only one left

Ordered some Rosewill hubs from you on Bitmit. Can't wait to get them. 

+1

Adrian Monk is twitching and convulsing right this very moment.  

I carry those too.
https://www.bitmit.net/en/item/63168-anker-usb-3-0-9port-hub-12v5a-power-adapter-free-shipping-asic
https://www.bitmit.net/en/item/59899-anker-9-port-hub-12v-5a-usb-92mm-fan-combo-free-shipping-asic

And I agree, Anker makes some of the best usb hubs.

If anyone buys an Anker hub from me please be aware that it will not ship out until October 3rd. It comes with Free Shipping but it is 3-5 days instead of 2 days.

It varies, but its always 2 days, on very rare occasions 3 days. If you order before Sunday night it should be there by the 2nd. If you order in the next couple hours maybe even the 1st.

You're right. I was thinking the RHB-500 only had 3 amps for some reason. Anyways, I will probably buy a few RHB-500s from you. Where are they being shipped from? Shipped via Priority Mail?

It looks like the RHB-500 has a 4amp psu while the RHB-520 has a 3.5a psu. If you have already been running the RHB-500 i would continue with that model.

Don't be a wanker, switch to an Anker!!

ps: you might wanna keep yours cleaner than i do. i know somewhere out there in the world, an OCD person is beating their face into the keyboard after seeing all that dust.

Got the manhattan to hold 6 anything more shuts down the whole hub, not sure about messing with the electronics to make it more powerful.

deleted. nvm

Cool


Btw, has anyone tried the Manhattan?
https://www.bitmit.net/en/item/62103-manhattan-28-port-usb-3-0-hub-powered-free-shipping-asic

I wonder how many usb asics it could handle with a bigger power supply.

That would be them. I bought them from Newegg's eBay store.

http://www.ebay.com/itm/Rosewill-RHB-500-10-Port-High-Speed-USB-2-0-Hub-/380715722827

I'm sure some of you are already aware of this but Nemo1024 has done an amazing job compiling valuable data about hubs here and are discussed extensively.

I have a wide selection. I consider the $14.99 entry level or on a budget.

Yep!  I have a few of these hubs but only use them as daisy-chained hosts for the hubs with the BEs.  The wall wart that comes with it is cheaply made; I wouldn't load them to the theoretical max of 4 BEs (4 x 0.5A = 2A).  Any power supply shouldn't be loaded to the max anyway.  They become less efficient and produces more heat (a direct result of wasted energy).  I make it a point to load them between 50% and 65% which is close enough to peak efficiency (50%); up to 75% tops if I'm in a bind and find the need to push them.

Like these?

https://www.bitmit.net/en/item/62789-rosewill-10-port-usb-2-0-hub-rhb-500-5v2a-free-2-day-ship-asic
https://www.bitmit.net/en/item/63165-rosewill-10-port-usb-2-0-hub-5v3-5a-rhb-520-free-shipping-asic

I don't trust these hubs at all. I've fried a few USB Block Erupters on them. They only run 3 erupters with the power supply it comes with. You can buy these for like $8 on eBay. I switched to the Rosewill 10-port hub ($25 a hub). They work great. I have 45 miners running on 5 hubs without a problem.

It just needs a beefier power supply. Once I get mine in I will find a supplier with 5v4a or 5v5a to handle 10 usb asics and then make a combo.

Some people already have, or know where to get, bigger power supplies for cheap.

That hub would be lucky to run 4 block eruptors. It has a 2A 5V power supply, all usb asics are 2.5W, or 500mA which is USB spec.

J

It's looks like the same generic made-in-China-special 10-port USB 2.0 hub that's all over the Bay and the Zon (comes in a variety of colors) that can be had for cheap.  What makes your offering special to command a price that is more than twice the prevailing interweb market price that also offers free shipping?  I'm just curious.  Thank you in advance.

My supplier just started carrying these, I have tried them with usb asics and with the stock power supply they will run 3-4 reliably. I'm running one right now with 4 usb asics and it hasn't had a hiccup since I hooked it up. These hubs can be upgraded by using a power supply that provides more amperage.

A 4-5a power supply is enough to run 8-10 usb asics. Thank you mijanur for this post on how to mod the $14.99 hub for better reliability with higher amperage.
https://bitcointalksearch.org/topic/m.3300729

I offer free 2 day shipping and escrow is enabled.

I have a very good selection of industrial usb hubs. If you want a better quality hub please check out my listings on bitmit.

https://www.bitmit.net/en/user/hendo420

$14.99 10 port USB hub
https://www.bitmit.net/en/item/68039-10-port-powered-usb-2-0-hub-free-2-day-shipping-asic


$12.99 ARCTIC Breeze Mobile USB-Powered 92mm Fan
https://www.bitmit.net/en/item/67795-arctic-breeze-mobile-usb-powered-92mm-fan-free-2-day-shipping


$28.99Rosewill 10-Port USB 2.0 Hub RHB-500 5v 4a
https://www.bitmit.net/en/item/68038-rosewill-10-port-usb-2-0-hub-rhb-500-5v4a-free-2-day-ship-asic


$25.99Rosewill 10-Port USB 2.0 Hub 5v3.5a RHB-520
https://www.bitmit.net/en/item/68036-rosewill-10-port-usb-2-0-hub-5v3-5a-rhb-520-free-shipping-asic


$69.99 Anker USB 3.0 9 Port Hub 12v 5a
https://www.bitmit.net/en/item/63168-anker-usb-3-0-9port-hub-12v5a-power-adapter-free-shipping-asic


$19.99 BalanceFrom 10 Port USB 2.0 Hub  5v 3a
https://www.bitmit.net/en/item/66323-balancefrom-10-port-usb-2-0-hub-5v3a-free-2-day-shipping-asic


$94.99 Dyconn 10-Port Industrial Grade USB 3.0 Hub
https://www.bitmit.net/en/item/62712-dyconn-10-port-industrial-grade-usb-3-0-hub-free-2-day-shipping


$59.99 Cable Matters 10-Port USB 3.0 Hub 12v 3a
https://www.bitmit.net/en/item/66327-cable-matters-10-port-usb-3-0-hub-12v3a-free-2-day-shipping-asic


$39.99 DKnight USB 3.0 7-Port Hub  5v 3a
https://www.bitmit.net/en/item/65292-dknight-usb-3-0-7-port-hub-5v3a-free-2-day-shipping-asic


$26.99  Etekcity 10 Port USB 2.0 Hub  12v 3a
https://www.bitmit.net/en/item/66328-etekcity-10-port-usb-2-0-hub-12v3a-free-2-day-shipping-asic


$33.99 Satechi 12 Port USB Hub
https://www.bitmit.net/en/item/62102-satechi-12-port-usb-hub-with-power-adapter-free-2-day-shipp-asic


$23.99 Sabrent USB 2.0 10 Port USB Hub  5v 2.5a
https://www.bitmit.net/en/item/66325-sabrent-usb-2-0-10-port-usb-hub-5v2-5a-free-2-day-shipping-asic


$28.99WD My Net Switch - 8 Port Gigabit Network Switch
https://www.bitmit.net/en/item/67822-wd-my-net-switch-8-port-gigabit-network-switch-free-2-day-ship


$24.99TP-LINK TL-SG1005D 5-Port Gigabit Switch
https://www.bitmit.net/en/item/67820-tp-link-tl-sg1005d-5-port-gigabit-switch-free-2-day-shipping


$17.99Black 100FT CAT6 Network Cable
https://www.bitmit.net/en/item/67816-black-100ft-cat6-cat-6-rj45-network-cable-100-free-shipping


$9.99Blue 50FT Cat6 Network Cable
https://www.bitmit.net/en/item/67815-50-foot-50-cat6-rj45-network-ethernet-lan-cable-blue-free-ship


$16.995-Pack Cat6 Snagless Ethernet Cable
https://www.bitmit.net/en/item/67818-5-pack-cat6-snagless-ethernet-cable-free-2-day-shipping