POE Switches

I am dealing with a vendor who is claiming that his POE switch can be damaged by connecting a non-POE device to it.  The only claim that I have heard like this is that the non-POE device may be affected but I have never heard of someone claiming that the POE switch itself can be damaged.  

Can a POE switch be damaged by connecting a non-POE device to it?
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Nick RhodeConnect With a Mentor IT DirectorCommented:
I don't see how it would damage the switch itself.  To me that just does not make any sense.  Logically you would think the non poe device would be damaged vs the switch itself.  There are some passive injectors that push power to non poe devices which would damage the device but typically with switches communicate with the device and check for compatibility before pushing power etc.
James HConnect With a Mentor IT DirectorCommented:
Never heard of this. I have tried plenty of POE switches and never had an issue like that. The switch will either provide power to port or just run as a standard switch port.
Craig BeckConnect With a Mentor Commented:
PoE Ethernet switches which adhere to the 802.3af or 802.3at standards are designed to detect if a PoE device is connected in order to supply power.  If no PoE device is attached, no power is supplied.  On that, it shouldn't be a problem for any device to connect whether it requires PoE or not.  Connecting non-PoE devices to a switch is a common scenario

It may be an issue if a device which isn't 802.3af or 802.3at compliant but tries to draw power from a PoE switch, but not if the device doesn't request power.

Of course, it could be a midspan or other proprietary PoE switch.  In that case I'd say refer to the manual :-)
What brand of POE switch is this?
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