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The eDP standard  allows various connectors with 44/40/30/20 pins

So please contact us for more detail about the eDP connector you used.

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  A specially designed eDP-to-DisplayPort cable is needed because of the physical incompatibility of the eDP Tx and DisplayPort Rx connectors. Since the eDP and DisplayPort standards are very similar, only a passive cable is needed, no level shifting.
  The DisplayPort connector has 20 pins, which include four differential lanes of the main link, a differential auxiliary channel (AUX) for slow speed control, Hot-Plug Detect signal (HPD), ground pins, CONFIG control pins, and two power pins. The eDP connector has those and additional optional pins, like brightness control, backlight and ambient light sensing. The eDP standard allows various connectors with 44/40/30/20 pins. However, this paper demonstrates only the 44-pin connector, since the others follow similar principles. Another reason for showing the 44-pin connector is that it used on Intel’s Customer Reference Boards (CRB).