Home Computer Speakers, Mixcder MSH169 USB 2.0 Powered Surround Subwoofer Multimedia Speaker with Enhanced Sound, Volume Control, 3.5mm Audio Jack for Laptop, PC, TV, MP3, MP4, Phone, iPad Rich and Clear Sound: 4 watts of total power (2W x 2) means you get strong stereo sound from these speakers. Integrated Volume Controls: Located on the speakers, makes it easy to adjust the volume to suit your preferences. USB Powered: Your speakers get power from the USB port on your laptop or notebook. Easy Setup: Just connect the speakers to your laptop with a standard 3.5 mm plug and you're ready to go. Compatible with most audio devices with a 3.5mm output: Including most Mac and PC computers, smartphones, tablets and MP3 players for wide-ranging use (USB Powered).