https://zh.donghootech.com/%e4%ba%a7%e5%93%81/%e5%b8%a6%e9%94%81%e7%b4%a7%e8%9e%ba%e9%92%89%e7%9a%84firewire-1394b-r-a%e4%b8%8b%e5%bc%af%e7%94%b5%e7%bc%86/