I have a network using a DHCP server controlled by a Zyxel firewall device (USG60).  I already have a wifi router on the network with a static IP address of 10.0.0.x (the DHCP grants IPs beginnging at 10.0.0.100), and the Zyxel device is 10.0.0.1.  So how do I connect this thing? I can't remember how I setup the other one -- probably direct wired to my laptop and set it up that way, wired to port 3 on the network input/outputs.  The WAN port is empty.  (Currently the WAN connection from my modem goes to the Zyxel device, which handles all DHCP. I disabled it on the other WiFi Router)

Thanks for any help/guidance you can provide.