Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Worse than useless

I own one of these. Every day or two, it will flake out, requiring me to unplug it and plug it back in in order for the computer to recognize any connected devices. Furthermore, whenever I try to use my USB scanner, the scanning application crashes in mid-scan. None of this happens if I use my old Linksys 4-port hub. Guess this goes into my drawer of broken electronics. I'm buying a Linksys 7-port hub instead.