Lot of TWO Pcs of Syba Connectland (H-FM-1020) USB Powered Stereo Sound Bar/Speakers - Black. For a laptop, the sound bar mounts on the laptop screen. It can also be connected to a PC. Open Box without the original packaging. 

The sound bar is USB powered (requires 5 volt from a USB port). Both speakers on this bar draw all the required power through USB connection so you don't have to worry finding an outlet or adapter. The 3.5 mm audio/stereo Jack is to directly connect to PC/laptop audio. 

Specs:

Rated power: 2 x 2.5W, full-range stereo sound and compact size optimized for mobile listening experience

Frequency response headset: 150Hz - 20 kHz

Cable length: 48-inch, easy cable management

Plugs: USB (for power), 3.5mm Jack for audio-stereo

Dimensions: 9" x 2.25" X 1"