Symbol 5530-2 from IEC 60417 - Title/Meaning: Colour video output, digital Function/description: To identify controls and connecting terminals specifically meant for digital colour video output.
Additional information: 
Published in: Supplement O, 1996,3C/293/DIS
Own work using: iso.org/obp/graphics/grs/28d3f4e9-c4b2-46ae-b972-175abb98c72f 200.png
Vectorization:  Mrmw