What if your iPollo B1 miner is not working properly? Maybe there is a problem with the control board. The iPollo B1 control board is mainly used to collect and process the data returned by the hash board. If the main control board is damaged, it will affect the normal income of miners. Therefore, it is recommended that you replace it in time. We sell iPollo B1 control boards to mining enthusiasts worldwide at reasonable prices and higher quality, which is convenient for everyone to replace damaged control boards and help miners quickly resume operation.