I have some doubts about one of my (new) laptop's usb ports regarding whether it is usb 2 or 3.
The port color is black, while it is reported that usb 3 come in blue.
From ubuntu 14, I checked with lsusb and I got
bcdUSB 3.00
which should mean that the usb port is version 3. Does the black color mean something?
While this isn't really a coding question, here's what a quick search results in:
Manufacturers are recommended to distinguish USB 3.0 connectors from their USB 2.0 counterparts by blue color-coding of the Standard-A receptacles and plugs,[2] and by the initials SS.
[...]
Since USB 2.0 and USB 3.0 ports may coexist on the same machine and they look similar, USB 3.0 specification mandates appropriate color-coding and recommends that the Standard-A USB 3.0 connector has a blue insert (Pantone 300C color). The same color-coding applies to the USB 3.0 Standard-A plug.
Source: Wikipedia
This does not necessarily mean that it is a USB2.0 port. It is most likely just of wrong color. You could try running a speed test (if you have a USB3.0 device to do so with).