Centra is compatible with Mac Power PC and iMac computers. In order to reliably run Centra be sure you are using Mac OS 10.4.4 or higher and Safari 2.0.1 or higher. Get more troubleshooting tips and other Centra information. Students can also visit the Student Computing Help Center in Barnard for assistance, call the Student Computing Help Center at 704-687-6400 or submit your question to the HelpDesk Online.