Like most institutions, Memorial Library requires you to sign-in to a proxy system to access electronic resources while you are off-campus. The Zotero Connector can make this more convenient. When it detects that you are using an institutional proxy to access a particular site, it will ask if you want to remember it in the future. If you agree, Zotero will automatically use the proxy for matching URLs in the future. You should be routed through the proxy login site if you're not already logged in, then you can access the database as you normally would.