coaxial DC power connectors have no specified voltage association", I would say no. 2. Which PoE injector would best fit with these ? The 5V one or the 7.5V one ? Regards --001636831cda1c127704967e37bd Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Hi,<br><br>Gigaset products like C470IP are using 6.5V/600mA power supply and a power jack I would qualify as a 5,5-2,5mm one.<br>I can see 5V or=A0 7.5V PoE here and there.<br><br>1. Is there a norm attaching power jacks electric and mechanical specifications in telecom or networking devices ?<br>