This Monsoon MM-700 speaker system replacement subwoofer unit is perfect for anyone who needs a new subwoofer for their computer setup. Tested and in great working condition, this unit is compatible with Monsoon brand computer speakers and features a 2.1 channel system configuration for immersive sound quality. The rectangular shape and black color make it sleek and stylish, and it is a wired connectivity unit. Tested and working with amazing sound. Enjoy!