Nikon Z9 Mirrorless Camera - Manual (Page 325)

325 Computers: Connecting via USB
3
Click [Start Transfer].
Pictures on the memory
card will be copied to the
computer.
4
Turn the camera off.
Disconnect the USB cable when transfer is complete.
D Windows 10 and Windows 8.1
Windows 10 and Windows 8.1 may
display an AutoPlay prompt when the
camera is connected.
Click the dialog and then click [ Nikon
Transfer 2 ] to select Nikon Transfer 2.