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Author Topic: USB hubs for ASICs  (Read 16382 times)
firefop
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October 30, 2012, 09:11:50 PM
 #81

+1 for D-Links and Belkins. I recommend them without hesitation.

Well that answers one question... if you actually worked for comcast you wouldn't like either of those manufacturers.


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October 31, 2012, 01:26:36 PM
 #82

+1 for D-Links and Belkins. I recommend them without hesitation.

Well that answers one question... if you actually worked for comcast you wouldn't like either of those manufacturers.



That's true Wink...

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November 01, 2012, 12:39:25 AM
 #83

The manufacturers fucked up bad.
They should have made the connection ethernet or firewire
Most Ethernet chips can support upto 64 simultaneous connections, USB can only handle ONE connection at a time, no matter how many devices are connected. (you could even STREAM the requirements out of the ethernet/firewire controller into the slaves using a single connection)
So once you start slapping on those GH/s units, the USB chain is going to be spending more time in negotiation/connection/disconnection
that it is just not funny.

The only real solution is to DUMP the hubs and load the computer up with USB cards, then at-least you can aim for 1:1 rather than some fucked up binary tree dangling off a single USB host.

HC


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November 01, 2012, 09:55:42 PM
 #84

MondoHub looks perfect.

http://www.manhattan-products.com/en-US/products/9583-mondohub

Fill that puppy up with ASICs.

guys, it's only 4 amps = 8 ports at full 500mA USB2 specs.

The details show:

  • Up to 500 mA power, all ports
  • Input: 100 - 240 V, 50/60 Hz; 1.6A, maximum

So I think it will be fine.

No it won't. Re-read the specs. Power adapter part.

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November 01, 2012, 11:35:50 PM
 #85

MondoHub looks perfect.

http://www.manhattan-products.com/en-US/products/9583-mondohub

Fill that puppy up with ASICs.

guys, it's only 4 amps = 8 ports at full 500mA USB2 specs.

The details show:

  • Up to 500 mA power, all ports
  • Input: 100 - 240 V, 50/60 Hz; 1.6A, maximum

So I think it will be fine.

No it won't. Re-read the specs. Power adapter part.


Guys you are just talking past each other.  Whether or not it can support full USB specs or not, 500mAmps per port is still only 4 amps for the entire hub.  I doubt 4 amps is enough to support 8 asic miners working full tilt, even if the power adapter was capable of putting out more than 1.6 amps.

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November 02, 2012, 01:54:37 AM
 #86

Related to quality and durability, by my own experience, US Robotics and Kensington seems to manufacture quality.. I've had those brand for different peripheral/components, those have never failed.. except for a USRobotic router that had cofee in, it just lose the capacity to save config.. I gave it to a friend who do not matter about config, still running, 10 years old !

I really appreciate all your inputs, lots of interesting info/links in this thread !  Thanks to all !

was my 2 satoshi !
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June 04, 2014, 04:52:53 AM
 #87

The manufacturers fucked up bad.
They should have made the connection ethernet or firewire
Most Ethernet chips can support upto 64 simultaneous connections, USB can only handle ONE connection at a time, no matter how many devices are connected. (you could even STREAM the requirements out of the ethernet/firewire controller into the slaves using a single connection)
So once you start slapping on those GH/s units, the USB chain is going to be spending more time in negotiation/connection/disconnection
that it is just not funny.

The only real solution is to DUMP the hubs and load the computer up with USB cards, then at-least you can aim for 1:1 rather than some fucked up binary tree dangling off a single USB host.

HC



+1 (I have often thought about this) so I wonder how that 49 port psu powered hub/board slows down 49 333's communicating? thats a lot of info squeezed into the smaller pipe.
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June 04, 2014, 05:27:55 AM
 #88

Why are people still farting around with USB ASICs? Am I missing something here?
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