Nikon D780 DSLR Camera (Body Only) - Manual (Page 745)

699 Menu Guide > B The Setup Menu
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Send File As
When uploading NEF+JPEG images, choose whether to upload
both the NEF (RAW) and JPEG files or only the JPEG copy.
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Deselect All?
Select [ Yes ] to remove transfer marking from all images. Upload
of images with a “sending” icon will immediately be terminated.
MAC Address
Display the MAC address.