Answer 2: Enamel is the hard material that coats your teeth, and is made mostly of a mineral. However, we call other things enamel. There's enamel paint, which is totally different, and there's also porcelain enamel, which is used to make a lot of dishes.
All of this is due to Amazon's unique approach with the Echo. It's not a portable speaker like we've seen from Jambox and Logitech. Instead, it's a rather large, cylindrical device that needs to be plugged into power. It's something you'll likely just leave in a single spot in your home.
A rule of thumb is to check the power-supply size used on a non-PoE-enabled switch and add 15.4 watts per port to determine if the power supply is large enough. 2. Connect the power source to uninterruptible and redundant power. The remote devices fed by PoE typically are mission-critical devices.