Nikon D780 DSLR Camera (Body Only) - Manual (Page 442)

396 Connecting to Computers and TVs
The optional High-Definition Multimedia Interface (HDMI) cable
or a type C HDMI cable (available separately from third-party
suppliers) can be used to connect the camera to high-definition
video devices. Always turn the camera off before connecting or
disconnecting an HDMI cable.
* Choose a cable with a connector that matches the connector on the
HDMI device.
Connecting to HDMI Devices
1 HDMI connector for
connection to camera 2 HDMI connector * for
connection to external device