下面是插入A设备后的信息
[root@localhost ~]# lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 003: ID 3102:7318
Bus 002 Device 002: ID 15ca:00c3 Textech International Ltd. Mini Optical Mouse
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub