EA4500 smartwifi : Router external ip address

Hi I have a EA4500 with smart wi-fi interface.

I need the ip address provided to my router by my internet provider so i can remote desktop into my home computer using port forwarding.

I could not locate the IP address of my router.

Under the connectivity , the internal ip is listed but not the external ip.

Can anyone point me to the rite direction.

Thanks

Vik