EDIFIER R101PF 2.1 Multimedia Speaker System with USB/SD/FM radio (Black) The R101PF by Edifier is a truly versatile 2.1 speaker system with built-in plug and play capabilities for multiple audio applications. The R101PF is equipped with a built in, fold away control panel that has SD card and USB ports, auxiliary input jack as well as a built-in FM radio tuner. A conveniently located, side mounted control panel allows users to change track, navigate manually and automatically though available FM radio frequencies, select the desired input and adjust the volume. The R101PF features a 4inch downward firing subwoofer to create smooth, deep bass, housed in a wooden enclosure to minimize the possibility of audio disparity. The satellites are compact in size to occupy a minimal surface area and are slightly angled towards the listener to enhance the listening experience