TX-NR5100 - Connecting a Subwoofer – Onkyo Product Support
Connecting 4 speakers + 1 subwoofer to a Desktop? - Team-BHP
Amazon.com: GOgroove BassPULSE 2.1 Computer Speakers with Red LED Glow Lights and Powered Subwoofer - Gaming Speaker System for Music on Desktop, Laptop, PC with 40 Watts, Heavy Bass : Electronics
ENHANCE S21 Computer Speaker System - 2.1 Powered Subwoofer with 80W Peak, LED Satellite Speakers - Walmart.com