这块主板的背面有几个点要说一下
第一个说的就是IEEE 1394的芯片

这个芯片的型号是XIO2221ZAY
技术手册长达几百页
我挑一下重点说
Full×1 PCIExpress™(PCIe)Throughput
Utilizes100-MHz Differential PCIExpress Common Reference Clock or 125-MHz Single-Ended Reference Clock
Fully Supports Provisions of IEEE Std P1394b-2002
Fully Compliant With Provisions of IEEE Std 1394-1995fora High-Performance Serial Busand IEEE Std1394a-2000
One IEEE Std 1394b Fully Compliant Cable Port at 100MBit/s,200MBit/s,400MBit/s,and800MBit/s
EEPROM Configuration Support to Load Global Unique ID for 1394 Fabric
Active-State Link Power Management Saves Power When Packet Activity on the PCIExpress Link Is Idle,Using Both L0s and L1 States

更重要的是,这个东西能烫到你怀疑人生,甚至感觉低温烫伤
我在技术文档里面可能是没注意,反正没看到这个芯片的功耗