This power kit by Polycom is a reliable and portable solution to power up your VVX x50 phone adapter. With a 5v/15w output and 3Amp capacity, it ensures that your device has enough power to function efficiently. This power kit comes with a NA power plug.Its features include plug in power, a universal power supply for VVX 150, and compatibility with 250 and 350 models. This black power supply has been manufactured in 2020 and is ideal for those who need a reliable power source for their VoIP phone adapter.