<p>From what I know, you can connect basically any amount of FPGA cards to one computer through USB hubs. Case in point:</p>

<p><img src="https://i.sstatic.net/4v1wy.png" alt="enter image description here"></p>

CC BY-SA 3.0
2014-10-22T02:49:50.257Z
I feel sorry for that lone desk fan.
Nick ODell
CC BY-SA 3.0
2012-06-23T15:12:23.053Z
how much money those monster make?
user4951
CC BY-SA 3.0
2012-06-23T18:03:49.913Z
An operating system may have limits.  With USB, a driver may be needed to address devices beyond nine.    Some hardware requires (or benefits from ) drivers too.
Stephen Gornick
CC BY-SA 3.0
2012-06-23T12:49:11.953Z
2012-06-23T12:49:11.953Z
ThePiachu
<p>I am looking at this. Dual FPGA X6500 Mining Card Rev 3 (Without Heatsinks)</p>

<p>So we connect the card via USB and the card will mine?</p>

<p>Should I buy one FPGA or several ones? Where do I attach the FPGA? PCI? USB?</p>

CC BY-SA 3.0
2012-06-23T08:48:52.877Z
I think ~$600 for 400MH/s is not the best deal. Myself, I'm waiting for these to show up (although it's not sure if they are real or just nonsense), they offer 3.5GH/s for $149: http://news.yahoo.com/butterfly-labs-announces-next-generation-asic-lineup-054626776.html
Steven Roose
CC BY-SA 3.0
2012-06-23T12:29:25.373Z
100% nonsense. BFL have a very bad reputation for never shipping products on time and over-estimating performance. It also makes no financial sense why they would price the product that cheaply.
Sean Chapman
CC BY-SA 3.0
2012-06-23T12:50:13.043Z
I don't think you should ask "how many should I buy" questions on SE. Please review your question to be non-personal and objective. You branch a bit too much from the title of your question.
ThePiachu
<fpga><mining-setup>
How many FPGA can be attached to one computer?
user4951
# How many FPGA can be attached to one computer?

(Asked by: username_0 on 2012-06-23)

I am looking at this. Dual FPGA X6500 Mining Card Rev 3 (Without Heatsinks)

So we connect the card via USB and the card will mine?

Should I buy one FPGA or several ones? Where do I attach the FPGA? PCI? USB?

**Tags:** fpga, mining-setup

> **Comments:**
> **username_1**: I think ~$600 for 400MH/s is not the best deal. Myself, I'm waiting for these to show up (although it's not sure if they are real or just nonsense), they offer 3.5GH/s for $149: http://news.yahoo.com/butterfly-labs-announces-next-generation-asic-lineup-054626776.html  
> **username_2**: 100% nonsense. BFL have a very bad reputation for never shipping products on time and over-estimating performance. It also makes no financial sense why they would price the product that cheaply.  
> **username_3**: I don't think you should ask "how many should I buy" questions on SE. Please review your question to be non-personal and objective. You branch a bit too much from the title of your question.  

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## 1 answers

### Answer by username_3 on 2012-06-23. Score: 3 | Accepted answer

From what I know, you can connect basically any amount of FPGA cards to one computer through USB hubs. Case in point:

![enter image description here](https://i.sstatic.net/4v1wy.png)

> **Comments:**
> **username_0**: how much money those monster make?  
> **username_5**: An operating system may have limits.  With USB, a driver may be needed to address devices beyond nine.    Some hardware requires (or benefits from ) drivers too.  
> **username_4**: I feel sorry for that lone desk fan.  

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