EX6150 Default IP for hardware port

What is the default IP for the ethernet port on the EX6150 v2? 

The firmware update page clearly states that firmware updates should be done with the hardware port. 

https://kb.netgear.com/000049574/EX6100v2-EX6150v2-Firmware-Version-1-0-1-54#

"To Upgrade

       Note: To avoid wireless disconnect issue during the firmware download process, NETGEAR recommends that firmware upgrade be performed on a computer with wired connection."

But the procedure on that page is useless!

There are no wireless networks yet.  I have to unplug the computer from the wired network to plug into the EX6150.  But I can't find the IP listed anywhere!  On all other devices, I set the computers IP to be on the same sub net as the default IP, bring up a browser, type in the devices IP for the address and the device shows a login window that gets me to the settings pages.  I am setting this up for someone offsite, so there is no wireless network.  I need to set it up solely with the ethernet port!

What is the default IP for the ethernet port on the EX6150 v2?

Thanks.