Instruct: Classify Amazon reviews into positive or negative sentiment
Query: DON'T BUY - SHORTED OUT MY DEVICES

THIS PRODUCT SHORTED OUT MY DEVICES. not only my 16GB flash drive that i used to back up my files, not only my hp wireless keyboard/mouse, but more importantly, my license key for my expensive music software. FRACKING A. if you're stuck on getting a powered usb hub, be very careful. don't buy cyberpower.