The TRENDnet TEW-821DAP Wireless Access Point requires a 12V DC, 1A power adapter. Because it is a business-class access point, it also supports Power over Ethernet (PoE), meaning you can power it using an ethernet cable connected to a PoE switch or a PoE injector. [1, 2]If you want to power the device using a standard wall outlet without a PoE switch, you will need to purchase a replacement AC adapter. [1]