<p>USB stick ASIC mining devices often fail due to lack of power over the USB port: laptop USB, weak USB hub, weak power supply.</p>

<p>Make sure you use a powered USB hub that others have had success with. Not all powered USB hubs can handle bitcoin mining.</p>

<p>This is especially problematic when running multiple USB sticks, but even a single stick can fail if your USB ports have particularly weak power as is often the case with laptops.</p>

CC BY-SA 3.0
2015-07-16T14:37:23.300Z
2015-07-16T14:37:23.300Z
Dr.Haribo
<p>I bought a YellowJacket to mine bitcoins. I'm using my raspberry pi to test it. </p>

<p>My actual configuration is: Raspberry pi using the usb from a laptop. With 1 yellow jacket. Software cgminer 4.9.2</p>

<p>My question is why I get so low speed? 
What I can do to improve my speed ?</p>

<p><img src="https://i.sstatic.net/ffrDS.png" alt="enter image description here">
<img src="https://i.sstatic.net/ICgYn.png" alt="enter image description here"></p>

CC BY-SA 3.0
2015-07-16T03:24:23.037Z
Did you try getting a USB hub?
Nick ODell
CC BY-SA 3.0
2015-07-16T04:12:44.883Z
No, I'm using connected to my lap top.@NickODell
AFetter
CC BY-SA 3.0
2015-07-16T04:46:22.543Z
If you haven't changed your configuration, isn't this a duplicate of your first question?
Nick ODell
<cgminer><miner-configuration><performance>
Why my mining has average so low
AFetter
# Why my mining has average so low

(Asked by: username_0 on 2015-07-16)

I bought a YellowJacket to mine bitcoins. I'm using my raspberry pi to test it.

My actual configuration is: Raspberry pi using the usb from a laptop. With 1 yellow jacket. Software cgminer 4.9.2

My question is why I get so low speed?
What I can do to improve my speed ?

![enter image description here](https://i.sstatic.net/ffrDS.png)
![enter image description here](https://i.sstatic.net/ICgYn.png)

**Tags:** cgminer, miner-configuration, performance

> **Comments:**
> **username_1**: Did you try getting a USB hub?  
> **username_0**: No, I'm using connected to my lap top.@NickODell  
> **username_1**: If you haven't changed your configuration, isn't this a duplicate of your first question?  

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## 1 answers

### Answer by username_2 on 2015-07-16. Score: 1 | Accepted answer

USB stick ASIC mining devices often fail due to lack of power over the USB port: laptop USB, weak USB hub, weak power supply.

Make sure you use a powered USB hub that others have had success with. Not all powered USB hubs can handle bitcoin mining.

This is especially problematic when running multiple USB sticks, but even a single stick can fail if your USB ports have particularly weak power as is often the case with laptops.


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