手册宣传的是4个usb3.0, 命令查询速度只有480M, 明显usb2.0. 有人知道什么原因吗? 如何解决速度问题? 无论插上何种设备, 这种情况必现.
james@ubuntu:~$ lsusb -t
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 5000M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
|__ Port 1: Dev 15, If 0, Class=Video, Driver=uvcvideo, 480M
|__ Port 1: Dev 15, If 1, Class=Video, Driver=uvcvideo, 480M
