[Question About Riser] The sticker under the PCB

Hello all,

I have a question. When you buy riser 1x -> 16 you have a kind of black sticker under the PCB.

This : http://image.dhgate.com/0x0/f2/albu/g4/M01/78/C3/rBVaEFd5-neAYxnkAAlYF50wRnQ640.jpg

Question : Do i have to remove it ? Or is it useful

I just keep it on. I think it's an anti static foam so your board doesn't short if it's in contact with any material that could produce static.

Ok but before installing on my wood rig, should i remove it ? It's strange that i don't see information about that on the web

I have not heard or seen anyone take it off even when using wood frames. I would just keep it on unless someone else says otherwise

Personally I removed it, but that's because I screwed my risers in using standoffs.

My main fear is about electricity...Can this conduct electricity ?

No. I would've been shocked long ago

They fell off my risers after a few weeks of mining