I got a shock!

So I got 2 cheap seedling T5 LED lights daisy chained. When I touched it the first time after plugging in, I got a bad shock. It has only 2 prongs in the plug not 3. Should I trash it? Or is there a better safer way to use it?

I've already ordered some different model that should be better. I guess that ones powered by USB have no risk of shock?

flip the plug over.
try them individually.
3 shocks throw them out

Dont power your grow with usb. No idea on your strips, common sense it.