PoE power pins of RJ45 connector

[bentech 1]

Hi ,

 

What is the standard pins that PoE uses regarding the IP cams?

 

Is it pin 4-5 for positive and 7-8 for negative ? (48v)

 

I want to test some IP cams and want to put power to them with RJ45

 

[jazzar 0]

just google:-

cat5 poe pinout

select images instead of web for results and then open any of the pictures that take your fancy.

and you are correct pins 4 &5 are +12 to 48v dc, pins 7 & 8 are gnd or 0v.

[bentech 1]

Okay , tks

 

And to make the cables, configuration A or B?

[khx73 0]

No difference. As long as you are the SAME on both ends.

[ssmith10pn 0]

I disagree with the statements above.

Pins 3 & 6 are +56v

Pins 1 & 2 are return.

 

The POE is an automatic negotiation between the device and the POE source.

You not going to get anywhere just applying power.

 

[Boogieman 1]

I disagree with the statements above.

Pins 3 & 6 are +56v

Pins 1 & 2 are return.

 

The POE is an automatic negotiation between the device and the POE source.

You not going to get anywhere just applying power.

 

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What the OP is describing is Mode B poe sometimes called passive. There is no negotiation using this method. 802.3af compliant devices need to support mode A and mode B.

[Roman.CA 0]

So what pinout i use for PoE camera T568A or T568B i have proper PoE 802.3AF switch (not one of the cheap ones that work in passive mode all the time).

[ssmith10pn 0]

So what pinout i use for PoE camera T568A or T568B i have proper PoE 802.3AF switch (not one of the cheap ones that work in passive mode all the time).

Makes no difference. As long as its the same at both ends of the cable.