This is a handy gadget.  I tested it on my desktop and it worked fine. My phone would not see it.  It is a worthwhile thing to keep in your drawer for those circumstances where you would otherwise be stymied.   My biggest complaint is the “manual” is printed in a font that is beyond the ability of my bifocals.   I wish vendors would charge a penny or two more and proved a readable startup manual. 

If reviewing a product, it may have been received free of charge. That will NEVER have a bearing on my recommendations.