Mac OS X
Mac OS X is the most current operating system (OS) running on Mac computers.
There are many different versions, but the latest is 10.7 Lion.
The most recent versions that WSU supports and that are on WSU Macbooks are 10.5 Leopard and 10.6 Snow Leopard.
If you are trying to figure out what version you have on your Mac, go to > About This Mac.