http://www.ebay.com/itm/Black-7-Port-USB-2-0-High-Speed-HUB-ON-OFF-Sharing-Switch-For-Laptop-PC-/110954699994?ssPageName=ADME:X:AAQ:US:1123
$5
Free shipping (from China, but I don't need it for a month at least)
Cool blue lights
7 ports.
How can you go wrong? I got 2.
Topic: USB hubs for ASICs - page 4. (Read 16439 times)
I just bought one of these http://www.newegg.com/Product/Product.aspx?Item=9SIA1DS0CF0426 for $41 with 15% discount
and upgraded my order for 8 jalapenos to a single SC so I won't have to worry about powering all of the jalapenos.
and upgraded my order for 8 jalapenos to a single SC so I won't have to worry about powering all of the jalapenos.
I've got a mondohub - works great. manual buttons are nice (they control if that port gets external power or not) - and having LEDs attached to each port switch is great for identifying if you've got a power delivery problem.
btw in case you missed my other post, if you think you don't need a powered USB hub for the Jalapenos, you do. Standard board USB power isn't good enough for like 4 different reasons. You could maybe get away with a PCI-E controller to help voltage dips, interference, unknown power limitations, etc but why not just go external?
For the singles, probably not unless you're actually out of them, as I would expect them to draw almost nothing over the USB power since it's 2.5W max and the singles are like 60 or 80W or whatever.
For the singles, probably not unless you're actually out of them, as I would expect them to draw almost nothing over the USB power since it's 2.5W max and the singles are like 60 or 80W or whatever.
This has worked flawlessly for me
http://www.newegg.com/Product/Product.aspx?Item=N82E16817392046
http://www.newegg.com/Product/Product.aspx?Item=N82E16817392046
well the small asics like the bfl jalepeno are usb powered
the bfl single sc and the bASIC have there own barrel connector for power
the bfl single sc and the bASIC have there own barrel connector for power
Thanks for the info. What is the best way to power via a barrel connector? Will each BFL Single/bASIC need a separate AC adapter?
well according to this
http://www.butterflylabs.com/order-form-bitforce-sc-jalapeno/
Product includes: Fully assembled enclosure, USB Cable, & driver software (including BTC block mining application).
it doesnt say anything about a ac adaptor
http://www.butterflylabs.com/order-form-bitforce-sc-jalapeno/
Product includes: Fully assembled enclosure, USB Cable, & driver software (including BTC block mining application).
it doesnt say anything about a ac adaptor
well the small asics like the bfl jalepeno are usb powered
I think BFL has already verified many times that that's not true. It's completely idiotic since USB power fluxuates and is limited and varies from computer to computer. It's the worst way to run a high end cbhip imagineable and 2.5W could never run a Jalapeno.
Just buy one of these and rewire a 12 port hub.
http://www.ebay.ca/itm/12A-5V-60W-Switching-DC-AC-Switch-Power-Supply-Driver-LED-Strip-CCTV-/260983585712?pt=LH_DefaultDomain_0&hash=item3cc3d57bb0
Alternately, if you have a newer PSU that uses a DC-DC converter for the lower voltage rails, just use the 5V rail from that. Most PSUs can put out way more 5V power than anyone uses.
http://www.ebay.ca/itm/12A-5V-60W-Switching-DC-AC-Switch-Power-Supply-Driver-LED-Strip-CCTV-/260983585712?pt=LH_DefaultDomain_0&hash=item3cc3d57bb0
Alternately, if you have a newer PSU that uses a DC-DC converter for the lower voltage rails, just use the 5V rail from that. Most PSUs can put out way more 5V power than anyone uses.
well the small asics like the bfl jalepeno are usb powered
the bfl single sc and the bASIC have there own barrel connector for power
the bfl single sc and the bASIC have there own barrel connector for power
btw almost any Asus or MSI motherboard made recently has a phone charging smart 3x power feature and every one I've ever seen recently supports 1 amp power. I guarantee no laptop on the planet under $800 does though.
I emailed Gigabyte about my mobo:
Do the USB ports (either 2.0 or 3.0) allow 500 milliamp or 1000 milliamp as a max current draw? If yes, which ones ?
My motherboard model: GA-990FXA-UD3(rev. 1.0)
I'll be using them for several Bitcoin mining devices consuming 4.5 watts (900 milliamp each).
From Gigabyte:
Dear Customer,
All are the same and they can accept up to 1A
*Whether to support 3X USB power design, it may vary by models*
We are unable to verify your device as only iphone, ipad been verified for charging.
WooHoo!!!!!!!!!!!!!!!!!! I still may get the dual USB cables,just to be sure I don't fry my mobo.
Do the USB ports (either 2.0 or 3.0) allow 500 milliamp or 1000 milliamp as a max current draw? If yes, which ones ?
My motherboard model: GA-990FXA-UD3(rev. 1.0)
I'll be using them for several Bitcoin mining devices consuming 4.5 watts (900 milliamp each).
From Gigabyte:
Dear Customer,
All are the same and they can accept up to 1A
*Whether to support 3X USB power design, it may vary by models*
We are unable to verify your device as only iphone, ipad been verified for charging.
WooHoo!!!!!!!!!!!!!!!!!! I still may get the dual USB cables,just to be sure I don't fry my mobo.
Would something powered by a molex connector work to power 4 jalapenos? Like this?
http://www.ebay.com/itm/EEEKit-for-PC-4Port-USB-3-0-HUB-to-PCI-e-PCI-Superspeed-Card-Adapter-NEC-Chipset-/170859690702?pt=US_Internal_Port_Expansion_Cards&hash=item27c807face
http://www.ebay.com/itm/EEEKit-for-PC-4Port-USB-3-0-HUB-to-PCI-e-PCI-Superspeed-Card-Adapter-NEC-Chipset-/170859690702?pt=US_Internal_Port_Expansion_Cards&hash=item27c807face
No standard USB 2 port coming from a computer supports 1A. There may be special ports or features on some motherboards that support 1A for quickly charging devices, but I wouldn't count on it.
+1 and also most pairs of USB ports right next to each other on the front of the case or inline USB ports on the motherboard itself share an electrical circuit so they're 0.5A total between them, each being able to pull the entire 0.5 though. So if Jalapenos need 1A via USB, A LOT of people are going to find that their system won't run them.
I bought Exsys 1177, the Usb Hub has 7 Ports and a 4A Power Supply.
I will install the Hub inside a 4HE 19", and the Hub has Support for power Supply by floppy connector, so no Adapter is neccessaryto use the ATX power Supply.
I will install the Hub inside a 4HE 19", and the Hub has Support for power Supply by floppy connector, so no Adapter is neccessaryto use the ATX power Supply.
A lot of newer boards come with high powered usb devices that are designed to support charging from a USB port and these should be sufficient for running the Jallies. In addition a lot of board manufacturers such as gigabbyte, msi, etc also have released software for high charging. The only exception I see is if you intend to run a large amount of the Jallies on a single machine, but if that was the case then getting a single would probably be a better idea
Cheers
Cheers
Good find
Heres the full specs:
Model No.:RHB-500
Color:Black
Type:USB
Standards:USB 2.0/1.1
Ports :1 x Upstream, 10 x Downstream
Transfer Rate :1.5/12/480Mbps
Power Input :Self-power mode / BUS-power mode
Power adapter: DC 5V 4A
Hub Dimension:155 x 69 x 28 mm / 6.1" x 2.7" x 1.1" (not including power adapter)
Weight:Unit Weight (not including adapter): 145g / 0.32 Lbs
Power Adapter: 195g / 0.43 Lbs
Warranty:1 Year
http://www.rosewill.com/products/1543/ProductDetail_Specifications.htm
No standard USB 2 port coming from a computer supports 1A. There may be special ports or features on some motherboards that support 1A for quickly charging devices, but I wouldn't count on it.
I asked this in this thread :
https://bitcointalksearch.org/topic/getting-ready-for-jalapenos-114428
And at BFL forum I posted some findings:
Heres a site with a great deal,never bought from them before,so use at your own risk.I will
13 port,5 volt-4 amp $35
http://www.synchrotech.com/product-u...b_13-port.html
Another 4 amp w/4 ports model $42.99
http://www.synchrotech.com/product-u...d-4-HU430.html
Each Jalapeno is 900ma,so 4 Jallies per hub,with 300ma left over.
But.....the ports I think only support 500ma each,so you'll need the dual USB cable too for each Jally
http://www.newegg.com/Product/Produc...82E16812270226
https://forums.butterflylabs.com/showthread.php/13-Lots-of-Jalapenos-on-one-PC
I'm still unsure,is USB 2.0 500ma & USB 3.0 1000ma?? Or do some 2.0 handle 1000ma??
https://bitcointalksearch.org/topic/getting-ready-for-jalapenos-114428
And at BFL forum I posted some findings:
Heres a site with a great deal,never bought from them before,so use at your own risk.I will
13 port,5 volt-4 amp $35
http://www.synchrotech.com/product-u...b_13-port.html
Another 4 amp w/4 ports model $42.99
http://www.synchrotech.com/product-u...d-4-HU430.html
Each Jalapeno is 900ma,so 4 Jallies per hub,with 300ma left over.
But.....the ports I think only support 500ma each,so you'll need the dual USB cable too for each Jally
http://www.newegg.com/Product/Produc...82E16812270226
https://forums.butterflylabs.com/showthread.php/13-Lots-of-Jalapenos-on-one-PC
I'm still unsure,is USB 2.0 500ma & USB 3.0 1000ma?? Or do some 2.0 handle 1000ma??
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