Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Noisy

I purchased this hub, but it made an obnoxious squealing noise when plugged into every computer I could find -- even without any other firewire devices connected.I returned it for a replacement, but the new one made the same noise.Is it too much to ask for a device with no moving parts or speaker to be silent? At least design a case that will contain the noise.