The Plantronics AP15 Audio Processor Amplifier 79960-01 is a black adapter with a 0.5 ft coil cord and RJ-14 connector. It has a 1:5 connection split/duplication and is compatible with Acer, ASUS, AOC, Amazon, and Advent brands. It is designed for use with Acer Aspire Switch and Acer Iconia Tab 8 W models and has an output voltage of 5 V. The unit is powered and comes in a set of two.