The Altec Lansing Wired Volume Controller 2100 Speaker System Remote Control Unit is a black plastic unit designed specifically for Altec Lansing speakers. It features a wired connectivity and a remote control function, making it convenient to adjust the volume and settings of your speaker system from a distance. The unit is compatible with the Altec Lansing 2100 model and is a reliable accessory for enhancing your computer or laptop audio experience. Made in China, this remote control unit provides a sleek and practical solution for controlling your speaker system effortlessly.