Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Drops Connections, Worthless Tech Support

I made the mistake of buying a DWL-520 card and the DWL-514 router. Huge error. The card drops connections frequently and tech support has been unable to correct the problem. Check the internet -- I am far from the only one to have experienced this same problem. I am currently trying to get my money back. Run!