The WC7500HD supports a Mac OS X 10.3 Panther Mac operating system which is newer than most webcams of this age and type. Most webcams of a comparable age and type to it support a Mac OS X 10.7 Lion Mac operating system. In addition, this Gear Head webcam support Mac OS X 10.4 Tiger and Mac OS X 10.5 Leopard and Mac OS X 10.6 Snow Leopard Mac operating systems.
This webcam's Mac operating systems support (Mac OS X 10.3 Panther) is in fact the worst supported Mac operating systems support across all webcams that are a comparable age to the WC7500HD.
Across similar types of webcam the best supported Mac operating systems support is Mac OS X 10.9 Mavericks.