Canon EOS-1D X Mark III Advanced User's Manual page 561

When connecting via Wi-Fi
Connect the computer for the Wi-Fi connection to the access point in advance.
Caution
Transferring movies
Each movie file is large, and transferring large files over Wi-Fi may take some time.
Referring to Communication Function
environment for stable communication between devices and the access point.
When connecting via wired LAN
Before using the following features over a wired LAN connection, connect a LAN cable to
the Ethernet terminal of the camera and the computer or access point.
• Image transfer to FTP servers
• Using EOS Utility
• Using Browser Remote
Use a highly shielded Category 5e or higher STP (Shielded Twisted Pair) Gigabit Ethernet
cable.
Precautions, arrange your network
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