Bitcoin Forum

I have two USB Antminer U2 sticks.

I plug them in to my mother board USB slots.

I have installed the proper driver.

http://www.silabs.com/products/mcu/Pages/USBtoUARTBridgeVCPDrivers.aspx

Windows will not recognize the USB sticks.

What am I doing wrong?

Windows 7 Ultimate 64-Bit with 6-Core CPU and 8 GB RAM.

I tried BFGMiner and CGMiner and looked in my Device Manager in windows and it sees there are two USB devices there but no drivers are installed.

I try to manually install the silabs drivers and still no luck.

Can someone help please?

http://i58.tinypic.com/2wdv9sp.png

Here is my device manager.

Here is proof I am installing the right driver.

http://i57.tinypic.com/1zcn049.png

I do not get what I am doing wrong.

Just tried the driver on a completely different machine and same result.

Could my USB devices be bad?

Aha, you may wanna try "zadig" to patch the drivers.
I used this tutorial for bitfury, but it also works with the new antminers.
Also make sure to use a usb 2 port, not 3!

https://www.youtube.com/watch?v=df9CjAlwYMc (https://www.youtube.com/watch?v=df9CjAlwYMc)

Sweet thanks man I am gonna try that.

I did the WinUSB from Zadig - I can see that it changed the driver but it's still not recognizing my devices :(

What do you mean, what does cgminer say?

It starts up fine and all ... but it says "No USB devices detected"

Are you sure you are using a usb 2 port?

Yes 100% sure. Unless my entire mobo is USB 3.0 but only a couple of the slots are blue.

I tried these sticks on a different machine too.

Hmm, that is odd. I am using these settings, maybe that is the issue?
https://i.imgur.com/49OPttu.png

I tried your exact settings. I just don't know why I cannot get Windows to recognize the device.

This is driving me nuts.

omfgggggggggggg I think I got it.

what did you change?

Nope, spoke too soon.

Son-of-a-bich this is pissing me off

I am about to throw these things out the window.

Possible I got two bad ones in a row?

It is theoretically possible, but very unlikely.
I have had about 50 working in a row, no DOA's.
I don't know what's the problem.

Try one at a time without any overclock settings. Your USB might not be providing enough power. Also start cgminer with the extra options -D -T
Then you might get some useful debugging information.

http://i58.tinypic.com/jsyuyv.png

It looks like CGMiner can see it. I just don't get what I am doing wrong ... ugh

Try with debugging enabled as I said, you may gleam something from it but expect a LOT of output.

Trying now... It is doing a bunch of stuff I don't understand.

These things suck ... I am sticking with S1

Well I dunno wtf but now they are working.

all I did was change the --anu-freq from 200 to 220 and now its working.

Thanks for your help fellas and dealing with my anger LOL

I'm glad it is working now.

I have the same problem but with an antminer u1 and it wont show under the list of Zadig please help me....