ip210t本网站没有，传了上来，是以太网转换串口的号芯片，台湾九阳公司产的，非常值得收藏啊，大家不要回后悔的。-ip210t this website does not, communication in the ranks is the Ethernet switch chip, serial numbers, Taiwan' s nine million yuan in production, very worthwhile collection ah, we should not