Brand new Jasminer X4 control board is used to replace the faulty JASMINER X4 1U control board. The control board plays the role of transmitting and calculating the miner's operating data during the operation of the miner. If the control board fails, the miner will not be able to operate normally. We sell high-quality Jasminer X4 control boards all over the world. All products have been strictly tested before delivery to ensure quality. Welcome to buy.