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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?

Courier
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    My ASUS ROG laptop has black-colored USB 3.0 ports. Since USB 3.0 is so common these days and some machines exclusively only have USB 3.0 ports, the blue color is not always used. – David Grayson Jul 13 '16 at 19:55

1 Answers1

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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).

skreborn
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    Black is becoming more common, especially on laptops. A lot of the USB ports will have the "SS" Super Speed logo near the port. Also, if you look in the port with a flashlight, there would be four conductors like USB 2, plus another 5 conductors near the front of the jack for USB 3. To check USB *devices* the extra 5 conductors would be in the rear of the connector instead of the front. – GuitarPicker May 07 '21 at 14:08