Environmental and Physical Specifications
Certification FCC, CE, RoHS
Operating Temperature 0 ˚C to 40 ˚C (32 ˚F to 104 ˚F)
Storage Temperature -40 ˚C to 70 ˚C (-40 ˚F to 158 ˚F)
Operating Humidity 10% to 90%RH non-condensing
Storage Humidity 5% to 90%RH non-condensing
Frequently Asked Questions (FAQ
Q1. Why is the Power LED not lit?
The Power LED should be lit when the power system is working normally. If the Power LED is not lit, please try the following:
A1: Make sure the power adapter is connected to the switch with power source properly.
A2: Make sure the voltage of the power supply meets the requirements of the input voltage of the switch.
A3: Make sure the power source is ON.
A4: On the LED On/Off configuration page, check whether the LED status is on. By default, the LED status is on.
Q2. Why is the Link/Act LED not lit while a device is connected to the corresponding port?
Please try the following:
A1: Make sure that the cable connectors are firmly plugged into the switch and the device.
A2: Make sure the connected device is turned on and works normally.
A3: The cable must be less than 100 meters long (328 feet). If Extend Mode is enabled, it should be less than 250 meters (820
feet).
A4: On the LED On/Off configuration page, check whether the LED status is on. By default, the LED status is on.
Q3. Why is PoE/PoE+ Port not supplying power for PoE devices?
When the total power consumption of connected PoE devices exceeds the maximum, the PoE port with a smaller port number has
higher priority. The system will cut off power to the ports with larger port numbers to ensure supplying to other ports.
Take TL-SG108PE as an example. Port 1, 2 and 4 are consuming 15.4 W respectively.
If an additional PoE device with 18 W is inserted to port 3, the system will cut off the power of port 4 to compensate for the overload.
To ask questions, find answers, and communicate with TP-Link users or engineers, please visit
https://community.tp-link.com to join TP-Link Community
For technical support, the user guide and other information, please visit https://www.tp-link.com/support, or simply
scan the QR code.
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