https://community.extremenetworks.com/t5/extremewireless-wing/short-circuit-and-overvoltage-of-power-supply/m-p/25254#M2336 Over voltage and short circuit protection is built into the Af and at power specifications, indeed the Poe will not enable until the device has been classified. modern switch mode power supplies also include this as a basic requirement. Sun, 25 Nov 2018 19:18:00 GMT Andrew_Blomley 2018-11-25T19:18:00Z https://community.extremenetworks.com/t5/extremewireless-wing/short-circuit-and-overvoltage-of-power-supply/m-p/25253#M2335 Hi community,<BR /> <BR /> Could anyone let me know does the power supply of an Access point (Adapter or PoE injector) have the protection mechanisms for case of Short circuit and overvoltage?<BR /> <BR /> Thank in advance! Sat, 24 Nov 2018 09:02:00 GMT https://community.extremenetworks.com/t5/extremewireless-wing/short-circuit-and-overvoltage-of-power-supply/m-p/25253#M2335 Son_Nguyen2 2018-11-24T09:02:00Z https://community.extremenetworks.com/t5/extremewireless-wing/short-circuit-and-overvoltage-of-power-supply/m-p/25254#M2336 Over voltage and short circuit protection is built into the Af and at power specifications, indeed the Poe will not enable until the device has been classified. modern switch mode power supplies also include this as a basic requirement. Sun, 25 Nov 2018 19:18:00 GMT https://community.extremenetworks.com/t5/extremewireless-wing/short-circuit-and-overvoltage-of-power-supply/m-p/25254#M2336 Andrew_Blomley 2018-11-25T19:18:00Z https://community.extremenetworks.com/t5/extremewireless-wing/short-circuit-and-overvoltage-of-power-supply/m-p/25255#M2337 Hi Andrew,<BR /> <BR /> Do you have the document to show this information? Sun, 25 Nov 2018 19:18:00 GMT https://community.extremenetworks.com/t5/extremewireless-wing/short-circuit-and-overvoltage-of-power-supply/m-p/25255#M2337 Son_Nguyen2 2018-11-25T19:18:00Z