Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Had high hopes for Zyxel but was disappointed - defective

In reading the other reviews I took a gamble and gave this unit a try. I have used smaller 5 port gigabit Zyxel switches in the past and loved them but this unit disappointed and it was defective on day one. Out of the box the unit kept dropping connections at random on different ports. Ping test showed the connection would drop and them come back with no corrective action from me. Some users would work and others would be down and then they come back up and then others went down. Never even got to try the management features as I had to remove from network ASAP as business operations were severly affected. Replaced with a spare older Dlink unit that was in service for years and all the problems instantly went away. Will have to look at the other brands that have a longer track record of reliability for my managed switch needs.