Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

My laptop has a yellow USB port. Is it USB 3.0?

share|improve this question
5  
Did you consult your Notebook user guide?, edit your post to include your Make and specific model if you wish a correct answer instead of an educated guess. –  Moab Dec 3 '10 at 17:16
3  
@Moab - RFTM? really?! –  ripper234 Dec 4 '10 at 6:38
    
Did you make any research effort yourself? Just typing in "yellow USB" into Google brings up at least 5 sites with the answer!? –  Dave Dec 9 '13 at 15:47
    
@DaveRook maybe in 2010, when I asked this question, there were no answers on Google? –  ripper234 Dec 16 '13 at 12:55

3 Answers 3

up vote 23 down vote accepted

A yellow USB port usually denotes an "always on" port. It supplies power to the device plugged into it even when the laptop is off.

share|improve this answer
9  
This tends to be the standard but it is not always the case. That said, I have yet to see a USB3 port that isn't blue. –  Shinrai Dec 3 '10 at 18:10
    
@Shinrai Apple MacBooks have white USB3 ports –  RoXX Jan 21 '13 at 17:40
    
I've seen a USB 3.0 port in WHITE as a keystone jack - no, it's just the casing that is white. The inner bar of the port is still blue. –  BGM Feb 11 '13 at 23:41

It can be whatever colour that your manufacturer wants it to be - I do not think there is a standard.

That being said, every product I have seen that supports USB 3 seems to have a blue socket, so there may be one!

If it is yellow, my guess is that it may be a way to indicate enhanced/increased/special power output.

What model do you have? If you write the model number, I can take a look to be sure.

share|improve this answer
3  
Actually, section 3.1.1.1 of the USB 3.0 spec says, "As an aid to users, USB 3.0 mandates standard coloring for plastic portions of USB 3.0 plugs and receptacles." However, the spec later only "recommends" Pantone 300C as the color for USB 3 connectors. –  rob Sep 20 '12 at 0:05

If it's a Lenovo ThinkPad chances are it's the "always on USB", which is a special port that remains powered when the computer is hibernating, or when the computer is fully powered off and the AC adapter plugged. This allows you to, for example, keep charging your phone or wireless controller without having to keep your computer running.

http://www.asprangers.com/post/2012/10/02/What%E2%80%99s-in-color-Yellow-Blue-Gray-color-USB-Ports-on-Lenovo.aspx

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.