Topic: can I use Ebay USB hub w/ 40a power supply? (Read 4140 times)
I currently have around 60 miners so Ill probably do 3 as well. I was going to start with one and see how that go's Like I said Im really trying to clean up all the cords.
So this is something I was thinking about today while I was looking at all the psu's plugged in to my power strips. Im considering this as a solution to that ugly mess of wires that my gf hates. I have all D-Link 7 port hubs that I would like to chain into one psu cord. Im guessing this http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=181143570443&fromMakeTrack=true&ssPageName=VIP:watchlink:top:en should do the trick.
How many hubs are you going to run? I am using 3 of these PSU and running 70 USB miners 
So this is something I was thinking about today while I was looking at all the psu's plugged in to my power strips. Im considering this as a solution to that ugly mess of wires that my gf hates. I have all D-Link 7 port hubs that I would like to chain into one psu cord. Im guessing this http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=181143570443&fromMakeTrack=true&ssPageName=VIP:watchlink:top:en should do the trick.
Barrel connectors are NOT your friend.
I cut the power cord on a cheap hub and wired it into the host PC's 5V line, been running for 4 months now.
This china hubs is a fake... Poor material 
it may also be worth "cutting the red wire" from the USB connector to the PC, this will stop power [+5V] being transmitted back to the PC on cheep hubs
Don't Daisy chain the hubs and power - power each separately
Don't Daisy chain the hubs and power - power each separately
This really depends on how much Amp the hub is drawing. My hubs runs 8 BEs, (4OC + 4 stock) perfectly for days. It's a PSU of 5V 60A. It appears that it can't draw more than 10Amp for that hub and if you do, it will melt the power plug...
Pork of coarse you are right. It does not matter how many amps you have at the plug from the PSU unless its to low. What matters at that point is how many amps the hub is drawing. Then the only next thing is how well the connection is on the barrel plug, if the connection is not a good fit, they can heat up or if the amps are over the rated amount for the barrel plugs and/or circuit board. ( I am not sure what the max amps are for this hub but 10 amps may be well beyond the max?)
It is ABSOLUTELY TRUE .... you *CAN* catch a USB hub on FIRE if you have devices on it that pull enough current (ask me how I know :-D ). The way I figure out when I'm getting close to the top end of allowd current in a USB hub device is I pull the plastic shroud off the 10-port strip hub and plug in just the hub PCB. I then plug in my USB devices (block Erupters in this case) and with a dual latex gloved hand hold onto the USB PCB (Because 5 VDC@ 40AMPS will kill you graveyard dead if it passes across your heart). I then power things up and if the USB hub PCB gets warm in my dual latex gloved hand I'm at a reasonable limit. If the hub PCB gets hot in my dual latex gloved hand I pull the power plug IMMEDIATELY on the Hub and remove one USB stick and let the USB PCB cool to room temp. Lather-Rinse-Repeat until you are holding a USB PCB that is only warm to the touch while running. If you avoid this test you'll have a "fire ready / Fire making" USB hub PCB in a plastic enclosure (AKA surrounded by an accelerant) like the one in the pictures above 
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It's not just the plug you need to worry about, but it is a concern. Any other wiring in there like from the board to the PCB or the PCB itself might just decide to say fuck it and burn.
http://www.powerstream.com/Wire_Size.htm
http://www.powerstream.com/Wire_Size.htm
This really depends on how much Amp the hub is drawing. My hubs runs 8 BEs, (4OC + 4 stock) perfectly for days. It's a PSU of 5V 60A. It appears that it can't draw more than 10Amp for that hub and if you do, it will melt the power plug...
This was 7A run through a 2A hub:
40 amps. Yeah, go for it.
40 amps. Yeah, go for it.
Subscribing for future fire damage pictures.
No fires here.. And I added another 20a PSU which now have 70 miners total running.
Subscribing for future fire damage pictures.
Buy hubs that are sold on amazon you will find some really good ones
That's good to hear. I plan to run 9 per hub, and I have the exact same hubs. the port at the end is a little weird, and I may or may not fill that one.
Now to get some power cord leads...
Now to get some power cord leads...
I tried those cheap chinese hubs. they're terrible, both with packed ac adapter, and separate 5v power. they blow. I had the ebay seller refund me after I sent them back.
If I buy a 10 port hub, I expect all 10 ports to work. No excuses.
There have been reports of even the Anker hubs having problems. But at $60+ per hub it starts to add up if a person wants to run 70-100 miners If I buy a 10 port hub, I expect all 10 ports to work. No excuses.
Aurel57,
Is there a reason you only ran 6-7 miners per hub?
I only did because I had extra hubs and wanted to balance the load. I have had all 10 ports filled before but have been doing different combinations and checking voltage drop across the hubs. I have more USB miners coming in the next day or so and will start up another PSU and fill some of the hubs up as I get 70 miners hashing. Is there a reason you only ran 6-7 miners per hub?
Aurel57,
Is there a reason you only ran 6-7 miners per hub?
Is there a reason you only ran 6-7 miners per hub?
I tried those cheap chinese hubs. they're terrible, both with packed ac adapter, and separate 5v power. they blow. I had the ebay seller refund me after I sent them back.
If I buy a 10 port hub, I expect all 10 ports to work. No excuses.
If I buy a 10 port hub, I expect all 10 ports to work. No excuses.
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