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Very disappointed to report my brand new Mk IV just released its magic smoke and is dead.

I used a PoE Adaptor (working fine on my Cisco 7940) into the PoE port and within seconds there was a "crack" and a puff of smoke. It had previpusly been working perfectly via the power connector.

I opened the box hoping it was a simple diode or cap - but unfortunately it destroyed a small IC.

So it's now in the bin. 8-(

Super-disappointed as I didn't do anything cowboyish.

Please be very careful if you're looking to use PoE. If you're like me, you can't afford to just go and buy another one. 8(

Cheers, Jason

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Hmmm, i know that cisco power injectors are rated 24 volts, what was the voltage on the power adapter for the cisco injector ?

<facepalm> I'm so embarrassed.

Just checked the voltage on the PoE Adaptor. It's 48v.

I should have checked first but this dopey bugger assumed everything was 12v.

Now my stupidity has left me without my Pineapple. 8(

I'm absolutely not blaming anyone else, but I wish there were some kind of over-voltage protection.

Guess I need to start saving for the replacement.

Cheers, Jason

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<facepalm> I'm so embarrassed.

Just checked the voltage on the PoE Adaptor. It's 48v.

I should have checked first but this dopey bugger assumed everything was 12v.

Now my stupidity has left me without my Pineapple. 8(

I'm absolutely not blaming anyone else, but I wish there were some kind of over-voltage protection.

Guess I need to start saving for the replacement.

Cheers, Jason

It's ok man, no body learns for free ;)

Try to fix that blown little piece, check that thread and try to contact the guy he can help you in all things related, he knows cuz he got burnt too.

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<facepalm> I'm so embarrassed.

Just checked the voltage on the PoE Adaptor. It's 48v.

I should have checked first but this dopey bugger assumed everything was 12v.

Now my stupidity has left me without my Pineapple. 8(

I'm absolutely not blaming anyone else, but I wish there were some kind of over-voltage protection.

Guess I need to start saving for the replacement.

Cheers, Jason

Always good to check specs before hooking things up. Will save time and money. :-)

http://www.alfa.com.tw/in/front/bin/ptdetail.phtml?Part=AP121U&Category=106129

PoE: 12V Passive PoE

It's passive which means the device will not negotiate a voltage. Hopefully this will help prevent other's having mishaps.

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