Does anyone know what this black line is from, I put a circle around the area of question ?


Hello Richard,

Thanks for contacting us!

It looks like there may be a small hair or piece of dist on the lens. Have you tried cleaning the outside of the lens?


Sam Morgan
Plugable Technologies

No, not yet, looks like a good " Trade Mark " to me . Lol …

What’s a good way to clean the lens ?

If you extend the lens all the way down, you should be able to clean it gently with a little alcohol and a cotton swab.

If this doesn’t help, you likely have debris from manufacturing inside the lens housing. In that case, please get in touch with me at and I’ll get a replacement headed your way…

Here’s an image after cleaning the lens .

It did help, but it’s still there and I put a yellow circle around the area of question …