A：Hello there, thank you for the information. Be sure to get in contact with our sales manager by means of WhatsApp at +8618623251355. The board has almost everything by now put in besides the CPU chip, such as the DDR and flash chips, and is particularly during the First firmware, https://antminercontrollboardsfor38149.blog-mall.com/38199697/the-definitive-guide-to-antminer-controll-boards