The best Amazon Echo add-ons and accessories

You'll also get an angled 3.5mm female-to-male adapter for connecting external speakers, and a 10-foot braided USB cable. Mount Genie suggests using power-over-ethernet (PoE) to supply electricity to the Echo Dot. No power supply is included, and you'll need to purchase either a power injector or a PoE switch plus a PoE splitter that you'll install at the Dot end of the ethernet cable (Mount Genie recommends a WiFi Texas model, which Amazon sells for about $21) if you decide to go that route.