Nikon Z 6II Reference Manual page 645

D
macOS
If Nikon Transfer 2 does not start automatically, confirm that the camera is
connected and then launch Image Capture (an application that comes
with macOS) and select Nikon Transfer 2 as the application that opens
when the camera is detected.
D
Transferring Movies
Do not attempt to transfer movies from the memory card while it is
inserted in a camera of a different make or model. Doing so could result in
the movies being deleted without being transferred.
D
Connecting to Computers
•
Do not turn the camera off or disconnect the USB cable while transfer is
in progress.
•
Do not use force or attempt to insert the connectors at an angle. Be sure
also to keep the connectors straight when disconnecting the cable.
•
Always turn the camera off before connecting or disconnecting a cable.
•
To ensure that data transfer is not interrupted, be sure the camera
battery is fully charged.
D
USB Hubs
Connect the camera directly to the computer; do not connect the cable
via a USB hub or keyboard.
Connecting to Computers Via USB
603