# Frequently Asked Questions (FAQ)

### **The Ethernet connection is not working, what should I check?**

**A:**

- Ensure the Ethernet module is fully seated in its connector.
- Verify the cable and router/switch port are working.
- Check that your router’s DHCP is enabled.

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### **Does the PoE module support passive PoE?**

**A:** No, only **IEEE 802.3af** active PoE is supported.

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### **How do I enable sound-reactive effects?**

**A:** Install the **Microphone add-on**, then enable “Sound Reactive” mode in WLED settings.

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### **Can I use SLWF-09 with ESPHome?**

**A:** Yes, you can flash ESPHome firmware using the web flasher or USB-C. Make sure to configure GPIO mapping according to the “GPIO Allocation” chapter.

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### **Can I run the SLWF-09 in both Wi-Fi and Ethernet modes at the same time?**

**A:** Yes, the ESP32 can maintain Wi-Fi and Ethernet simultaneously. However, WLED will usually prioritize Ethernet for control traffic.

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### **How do I reset the device to factory defaults?**

**A:** Reflash device using this tool [https://smlight.tech/flasher/#SLWF-09](https://smlight.tech/flasher/#SLWF-09)

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### **Can I power the controller by POE and use other power input for the LEDs?**

**A:** You can **only use one** power source at a time: either PoE or external DC power.  
**It is STRICTLY FORBIDDEN to power the device simultaneously from different power sources.**

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### **Is it normal that powering the unit to I don't see any status led visible?**

**A:** Yes it is normal, by default the indicators are not on but you can press one of the buttons and you will see the LED indication.