The MAC address is located on the sticker found on the ADC-VC826 mount and the bottom of the ADC-VC826 box. 

Note: The MAC address (not the SN number) is the number that is used for installation and finding the video device on the Partner Portal. 

The following image displays the sticker found on the ADC-VC826 device. 

The following image displays the sticker found on a video device's box. The firmware version that was initially loaded on the camera is also located on the box sticker as FW.