The MagicJack #A921 Long Distance Calling Telephone Unit is a USB block device dongle that allows for wireless long distance calling. It provides a single phone line and is designed as an outlet phone jack system. This multicolor unit is manufactured by magic-jack and features Power Over Ethernet (PoE) capabilities. With an interface that includes USB and DSL/Phone (RJ-11), this device was manufactured in 2010 and does not come with a manufacturer warranty. It is a reliable and convenient solution for home networking and connectivity needs.