On 2020-02-29 11:12 a.m., Alan Stern wrote:
On Fri, 28 Feb 2020, James wrote:
$ lsusb -t
/: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M
/: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 480M
|__ Port 1: Dev 6, If 0, Class=Vendor Specific Class,
Driver=rtl88x2bu, 480M
bcdUSB 2.10
Means it's USB2, right?
How reliable is this?
Quite reliable. However, on occasion something goes wrong when a
USB-3 device is plugged in. For some reason the USB-3 connection
fails; when this happens the device switches over to the USB-2
connection and then communicates at the lower speed. It still works,
but in a degraded manner.
If something went wrong would it still say bcdUSB 2.10?
It's marketed as USB 3 and it is important to have the bandwidth because
it is a network device.
