Frequently asked questions about PoE function on QSW Switch
Applicable Products
QSW switch
Can I connect non-powered devices to a PoE switch? Will it damage them?
If your PoE switch follows the PoE standard, the switch will auto-detect if the connected devices does not support PoE and will only provide a network connection.
The power consumption of my powered devices is lower than the maximum power of the PoE port. Will it damage my powered devices?
No. Before a PoE switch powers a device, it determines how much power (if any) the connected device requires. This procedure uses low power and does not affect connected devices. This is a standard feature of all IEEE 802.3af/at/bt-compliant devices.
Can I connect one PoE switch to another PoE switch?
Yes. If you connect two PoE switches, both PoE switches will only have network connection without supplying power. PoE switches only supply power to detected powered devices.
Can I use CCA (Cu/Al) Cable?
Copper-Clad Aluminum (CCA) cable uses an aluminum core and is coated with copper. Aluminum is not a good electrical conductor compared to copper. The higher DC-resistance of aluminum means more power lost and dissipated as heat.
In this case, CCA cable provide worse capabilities to supply power for PoE applications. So it is recommended to only use 100% cooper ethernet cables for your PoE applications.
The distance between my PoE switch and powered devices is over 100 meters. What can I do to extend the distance over 100 meters?
Use a PoE extender (also called a PoE repeater) between PoE switches and powered devices.
