Triangle and Green Dot....What are they?

Thank you.

I have an Audio Magic Stealth Digital Mini, and the left socket has the green dot & red outlined triangle.

The triangle indicates that the device is an isolated ground receptacle.

The orange triangle indicates that the receptacle is an isolated ground receptacle. The ground contacts in these receptacles are, by design, isolated from the mounting yoke. This allows you to separate your equipment ground from the ground for the box and the conduit (and the face plate if metallic).

Thank you all.

Pink triangles were tattooed onto suspected homosexuals by the Nazi regime in Germany. Hence the gay owners of the famous British turntable manufacturer, Pink Triangle, were making a statement when they picked the name for their marque.