Thunderbolt is a proprietary specification by Intel and Apple, while Displayport is an open standard developed by VESA.

USB connector hardware can meet the Thunderbolt or Displayport specifications, but must conform. Most do not.

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“The model is named Apertus – Latin for “open” – highlighting its distinctive feature: the entire development process, including its architecture, model weights, and training data and recipes, is openly accessible and fully documented.”