埠號 usb-device 命令是什麼意思？

我將使用 C++ 為 USB 設備編寫程序並顯示埠號，當您在終端中輸入時，root@raminfp# usb-device您將在輸出中看到：

T:  Bus=02 Lev=01 Prnt=01 Port=00 Cnt=02 Dev#=  3 Spd=12  MxCh= 7 

什麼意思Port:00或Port:01？

https://www.mjmwired.net/kernel/Documentation/usb/proc_usb_info.txt

T:  Bus=dd Lev=dd Prnt=dd Port=dd Cnt=dd Dev#=ddd Spd=dddd MxCh=dd
118 |   |      |      |       |       |      |        |        |__MaxChildren
119 |   |      |      |       |       |      |        |__Device Speed in Mbps
120 |   |      |      |       |       |      |__DeviceNumber
121 |   |      |      |       |       |__Count of devices at this level
122 |   |      |      |       |__Connector/Port on Parent for this device
123 |   |      |      |__Parent DeviceNumber
124 |   |      |__Level in topology for this bus
125 |   |__Bus number
126 |__Topology info tag

引用自：https://unix.stackexchange.com/questions/377622