Symbol 5522-2 from IEC 60417 - Title/Meaning: Colour video input/output, digital Function/description: To identify controls and connecting terminals specifically meant for digital colour video input/output.
Additional information: 
Published in: Supplement O, 1996,3C/293/DIS
Own work using: iso.org/obp/graphics/grs/5a838626-f883-4899-91ee-522e7d9e0bbe 200.png
Vectorization:  Mrmw