
APC vs. UPC Connectors: What’s the Difference and Which Should You Use?
APC and UPC connectors differ in one key spot: the ferrule end face polish. UPC (Ultra Physical Contact) connectors have a flat polish and show up blue. APC (Angled Physical Contact) connectors have an 8-degree angled polish and show up green. That angle cuts back reflection, giving APC connectors better







