WRT1900AC SSH password

Hello,

So, I just tried to SSH into my WRT1900AC to see if my new router supports SSH. Well, Good news it does. But I can't seem to figure out the default password or with that... the username. I had the username as admin, but no luck logging in using Linksys' default passwords (admin, password).

Does anyone know this info and or where to find it? I tried looking in the manual, no luck.

Thanks,
Throdne