timyu94 summed it up pretty well but you shouldn't need to SSH into the UniFi AP per that youtube video link. The AP will obtain an IP address via DHCP from the Pace modem once properly connected (see steps below). You can see which IP the Pace assigns the AP by logging into your Pace modem from your PC.... Look for DHCP clients/network devices or something similar if the UniFi controller doesn't automatically detect it after installation. And don't forget to disable WiFi on the Pace once the AP is setup and configured.
6 steps to 'make it work':
1) Connect an ethernet cable from the Pace modem to the included UniFi PoE injector's "LAN" port.
2) Connect a second ethernet cable from the PoE injectors "POE" port to the UniFi AP. This cable can be fairly lengthy if needed and it's recommended (but not required) to mount the AP high on a wall or from the ceiling if possible for best coverage. If you've ever fished a cable this shouldn't be too hard.
3) Plug in the PoE injectors power cord to an electrical outlet. You should now see the AP light up.
4) Install the UniFi Controller software on your PC in the link I provided in my last post. You'll also need Java installed if not already: https://java.com/en/download/
5) Once installation completes and you run the controller from the icon on your desktop, the wizard will walk you through the setup including setting up your WiFi SSID name, password, etc. There are many settings you can play with but shouldn't need to other than adjusting the wireless channels if you experience interference.
6) Don't forget to 'adopt' the AP from the controller if the wizard doesn't walk you through this step. Click on devices on the left pane of the controller and see if it's listed. If not, you can specify the IP listed in your Pace modem network devices page or use the discovery tool that timyu94 mentioned: https://www.ubnt.com/downloads/tools/be ... covery.zip
This may seem complex but it's pretty simple and once setup properly you shouldn't need to touch it again except for controller and firmware updates. The controller only needs to run to make changes or updates - the AP will continue to function when the controller is not running.
UniFi tech support is also very helpful by the way...
Best of luck!!
6 steps to 'make it work':
1) Connect an ethernet cable from the Pace modem to the included UniFi PoE injector's "LAN" port.
2) Connect a second ethernet cable from the PoE injectors "POE" port to the UniFi AP. This cable can be fairly lengthy if needed and it's recommended (but not required) to mount the AP high on a wall or from the ceiling if possible for best coverage. If you've ever fished a cable this shouldn't be too hard.
3) Plug in the PoE injectors power cord to an electrical outlet. You should now see the AP light up.
4) Install the UniFi Controller software on your PC in the link I provided in my last post. You'll also need Java installed if not already: https://java.com/en/download/
5) Once installation completes and you run the controller from the icon on your desktop, the wizard will walk you through the setup including setting up your WiFi SSID name, password, etc. There are many settings you can play with but shouldn't need to other than adjusting the wireless channels if you experience interference.
6) Don't forget to 'adopt' the AP from the controller if the wizard doesn't walk you through this step. Click on devices on the left pane of the controller and see if it's listed. If not, you can specify the IP listed in your Pace modem network devices page or use the discovery tool that timyu94 mentioned: https://www.ubnt.com/downloads/tools/be ... covery.zip
This may seem complex but it's pretty simple and once setup properly you shouldn't need to touch it again except for controller and firmware updates. The controller only needs to run to make changes or updates - the AP will continue to function when the controller is not running.
UniFi tech support is also very helpful by the way...
Best of luck!!