Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

SG200-08 switch - POE voltage required (POE Injector possible?)

Hello all,


I've just purchased an SG200-08 port switch that I'd like to deliver 2 POE ports.

Is the SG200-08 (not 08P) supposed to work as a PSE for other POE PDs?


Additionally, is it anywhere documented which type of POE Input voltage is needed for this switch in Port 1?

The question is because I do have a 24v POE injector that I'd like to use to power this switch, but in the specifications this switch is supposed to receive only 12v.

Any recommendations? Will I burn the switch if I connect a 24v POE injector in port 1 ?


Tks for your help



The SG200-08 has no PSE

The SG200-08 has no PSE capability. It can accept PoE from an upstream switch or injector, but it can't power other devices. If you connect an injector to the upstream switch and try to power the SG200-08 via port 1, it should come up as long as you can deliver 12V and 1A. I have heard of people using injectors up to 48V and not having any trouble, so 24V shouldn't be a problem. The nice thing about PoE is that power is not supplied unless it is requested by the downstream, and even then, only what the device requests... so you won't be running the risk of burning it out.

New Member

Thanks Jody for your response

Thanks Jody for your response.

So, I cannot use the SG200-08 to power any kind of device... too bad (for me).

Getting any PoE-powered

Getting any PoE-powered switch to power downstream devices is a challenge. With PoE+ we may see that change.

The only Cisco switches I know of that can do this are some of the 2960C and 3560C units... and even they require two feeds from the upstream device for limited downstream PoE support. 

CreatePlease login to create content