Instruct: Classify Amazon reviews into positive or negative sentiment
Query: extremely disappointed

I purchased this item to try to increase performance on my Toshiba laptop. I have to use it on the fringe of the wireless range. The built-in wireless card connects but is weak and drops frequently. This adapter was not as good as my built-in, and when I connected the recommended external antenna the signal dropped even more. When I contacted the mfgr by email, I was ignored. I am off this company altogether. Next time I will stick with Belkin or Linksys.