https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/GPS-Receiver-Compatibility/m-p/111373#M83134 None is plug and play. If you use the wi-Fi adapter you can plug in a Bluetooth dongle and then pair with a Bluetooth GPS. Sun, 24 Aug 2014 03:28:50 GMT jrhoffman75 2014-08-24T03:28:50Z https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/GPS-Receiver-Compatibility/m-p/111359#M83133 <P>Which GPS unit is compatible with the Canon 1D Mark IV?</P> Sun, 24 Aug 2014 00:03:07 GMT https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/GPS-Receiver-Compatibility/m-p/111359#M83133 imackey 2014-08-24T00:03:07Z https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/GPS-Receiver-Compatibility/m-p/111373#M83134 None is plug and play. If you use the wi-Fi adapter you can plug in a Bluetooth dongle and then pair with a Bluetooth GPS. Sun, 24 Aug 2014 03:28:50 GMT https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/GPS-Receiver-Compatibility/m-p/111373#M83134 jrhoffman75 2014-08-24T03:28:50Z