I/O Interface 2*7 Pin for WhatsMiner Hash Board The data interface is a 7*2 PIN discharge socket, which is usually used for soldering on the hash board of the ASIC miner Whatsminer. Connect to the connector through a data cable, and transmit the data of the control board to the hash board through this interface; then return the parameters collected by the hash board to the FPGA of the control board. Used to repair Whatsminer hash board, reduce repair costs and increase mining revenue.