As far as I know from trying to help another Lennar smart home owner, he had 9 things plugged into the ICX-7150 Poe switch.
1. Ethernet port in Living Room
2. Ethernet Port in Family Room
3. Ethernet port in Master Bedroom
4. Lutron home lighting interface device
5. Samsung Smart Things home interface device
6. Kevo home interface device
7. Ring doorbell elite Poe
8. Ruckus r510 AP
And others would have a 2nd r510 plugged in too.
I recommend turning off the WiFi on the ISP modem router.