Solved What these signs in the computer components indicate?

[Imrankhan]

What these symbols behind the Computer components mean. Especially that 20(circled by 2arrows) indicate.
I have same with 10 in my Router.
What those mean. Is there a link where I could get to know all these symbols.

 

[pbcopter]

The circle with two arrows indicates that the product contains certain hazardous materials but can be safely used for the time indicated by the number in years.

China RoHS 2 2015 | China RoHS Marking | Comparison Between China RoHS and EU RoHS

https://www.google.com/search?q=international+symbols+on+electronic+labels&rls=com.microsoft:en-US:IE-Address&tbm=isch&imgil=M-Rebn-LukOpQM%253A%253BW2fmkd7c4feD3M%253Bhttp%25253A%25252F%25252Fwww.jameco.com%25252Fjameco%25252Fcontent%25252Fwalladapter.html&source=iu&pf=m&fir=M-Rebn-LukOpQM%253A%252CW2fmkd7c4feD3M%252C_&biw=845&bih=480&usg=__09nEH72esoddmi6QXVIYuW6zAK8%3D&ved=0ahUKEwjwjpOB9qbJAhUK6SYKHX0rDHsQyjcINQ&ei=-jhTVvApitKbAf3WsNgH#imgrc=apGqQzLQJh7VHM%3A&usg=__09nEH72esoddmi6QXVIYuW6zAK8%3D

 

[Stevekir]

The circle with two arrows indicates that the product contains certain hazardous materials but can be safely used for the time indicated by the number in years.

I'm often impressed by the depth of knowledge you folk have. Does anyone know how to prevent aging (of me I mean)?

 

[Imrankhan]

Thanks pbcopter.
It would be lot easier if there's an article on internet explaining all possible safety symbols.
We buy product and don't understand what these little signs infer.

 

[UsernameIssues]

Here is more than you ever wanted to read about the trash bin symbol on EEE (electrical and electronic equipment):

EUR-Lex - 32012L0019 - EN - EUR-Lex




More info on that and other symbols:
What the Strange Symbols on Your Gadgets Mean

An old version of the SAS logo:
Serial Attached SCSI Logos — 3Gb/s | Library
Newer versions of that logo can be seen at the bottom of the image in this article:
SAS Device to Mid-Plane Interconnects Roadmap | Library

 

[Imrankhan]

Thank you UsernameIssues.
Thanks a lot for more information.
May your Issues on Username gets resolved. Just kidding.

 

[UsernameIssues]