The Gembird A4-PK-920H supports a Mac OS X 10.9 Mavericks mac operating systems supported which is newer than most comparable spec webcams that have been available for a similar time to it. Most built-in microphone webcams that are a similar age to it support a Mac OS X 10.7 Lion mac operating systems supported. This webcam also support Mac OS X 10.5 Leopard and Mac OS X 10.6 Snow Leopard and Mac OS X 10.8 Mountain Lion mac operating systems supporteds.
This webcam's Mac operating systems support (Mac OS X 10.9 Mavericks) is actually the best supported Mac operating systems support across all comparable spec webcams that have been available for a similar time to the A4-PK-920H.
A Mac OS X 10.4 Tiger mac operating systems supported is the worst supported Mac operating systems support amongst comparable types of webcam.