PowerDsine

PowerDsine was a semiconductor and systems company, acquired by Microsemi in January 2007 following its IPO in 2004. It was established in 1994. Its initial products were telephone ringing generators, and it also developed DSL remote power feeding modules, before inventing Power over Ethernet's (PoE) precursor Power over LAN.

PowerDsine, a prominent company in the field of Power over Ethernet (PoE) technologies, supplied a range of products including PoE Injectors, which are devices that add power to Ethernet cables for powering network devices. Additionally, they provided specialized PoE Test Equipment to ensure the proper functioning of PoE installations, and PoE Integrated Circuits (ICs) for embedding PoE capabilities into various network devices.