How to setup ASIC Block Erupter

Setting up ASICMiner’s Block Erupters to work with CGminer

Setup Block Erupter with CGminer

You just received your ASICMiner’s Block Erupter and you’re ready to get it mining for some Bitcoins, but you can’t seem to find the instructions anywhere.  After few hours of digging on Bitcoin Talk I was able to get a few Block Erupters mining Bitcoins in no time.  These instructions worked for me on Windows 7 while mining with CGminer.

What you will need:

1. Plug your Block Erupter USB Miner into your computer or USB Hub for Block Erupters if you have multiple Block Erupters. Keep in mind that if you’re plugging multiple Block Erupters in to a hub you will need to invest in a powered USB Hub, while the Erupter pulls dramatically less power then GPU, they will still require ~ 2,5 watts according to the specs.
2. If you have not installed the the driver for the Block Erupters yet, go ahead and run the driver you downloaded from

3. If the driver was setup successfully you will see your Erupters in your list of devices (Control Panel – Devices and Printers).  Make sure you make a note of what COM port your device is connected to (see below).

How to setup ASICMiner's Block Erupter USB Bitcoin Miner

4. If you’re familiar with CGMiner, then you are all set to run your CGMiner.  Instead of running cgminer.exe make sure you use cgminer-nongpu.exe.  If you you want to create a shortcut, just create the following command line:

cgminer-nogpu.exe -o [pool]:[port] -u [username_worker] -p [password] --icarus-options 115200:1:1 --icarus-timing 3.0=100 -S //./COM3 -S //./COM4 -S //./COM5

Make sure you make the proper changes with the proper COM port that your device is plugged into (the COM Port number from Device and Printers)

5. Start your CGMiner (I tested successfully on CGMiner 3.1.1   If your Block Erupters are setup correctly, you should see familiar CGMiner mining screen.

How to setup ASIC Block Erupter

In the next few days I will update using different Bitcoin Miners as well as instructions on different OS as I get my hands on them.   I am interested to test the rumor that these Block Erupters can operate off Raspberri Pi while achieving close to 400 MHs.

If you have problems getting CGMiner to work with your Block Erupters, I’ve added instructions on how to setup Block Erupters with BFGminer here