diff --git a/homeassistant/components/unifi/switch.py b/homeassistant/components/unifi/switch.py
index 87c9b9f4f4f..846c6d12234 100644
--- a/homeassistant/components/unifi/switch.py
+++ b/homeassistant/components/unifi/switch.py
@@ -131,7 +131,9 @@ async def async_poe_port_control_fn(
     """Control poe state."""
     mac, _, index = obj_id.partition("_")
     device = api.devices[mac]
-    state = "auto" if target else "off"
+    port = api.ports[obj_id]
+    on_state = "auto" if port.raw["poe_caps"] != 8 else "passthrough"
+    state = on_state if target else "off"
     await api.request(DeviceSetPoePortModeRequest.create(device, int(index), state))
 
 
diff --git a/tests/components/unifi/test_switch.py b/tests/components/unifi/test_switch.py
index 6ea52c95a9f..6b7ee2cd0a7 100644
--- a/tests/components/unifi/test_switch.py
+++ b/tests/components/unifi/test_switch.py
@@ -138,6 +138,7 @@ DEVICE_1 = {
             "media": "GE",
             "name": "Port 1",
             "port_idx": 1,
+            "poe_caps": 7,
             "poe_class": "Class 4",
             "poe_enable": True,
             "poe_mode": "auto",
@@ -151,6 +152,7 @@ DEVICE_1 = {
             "media": "GE",
             "name": "Port 2",
             "port_idx": 2,
+            "poe_caps": 7,
             "poe_class": "Class 4",
             "poe_enable": True,
             "poe_mode": "auto",
@@ -164,6 +166,7 @@ DEVICE_1 = {
             "media": "GE",
             "name": "Port 3",
             "port_idx": 3,
+            "poe_caps": 7,
             "poe_class": "Unknown",
             "poe_enable": False,
             "poe_mode": "off",
@@ -177,6 +180,7 @@ DEVICE_1 = {
             "media": "GE",
             "name": "Port 4",
             "port_idx": 4,
+            "poe_caps": 7,
             "poe_class": "Unknown",
             "poe_enable": False,
             "poe_mode": "auto",