You can use a third-party microphone to record sounds on computers that do not have a sound input port.
To record sounds on a computer that does not have a sound input port, you must purchase an external microphone or audio adapter that connects to the computer's Universal Serial Bus (USB) port(s). Click the Macintosh Products Guide link on the Apple USB Web site (http://www.apple.com/usb/) to find a USB microphone or USB audio adapter. Follow the instructions that come with your microphone to record sounds.
These computers do not have a sound input port:
These computers have a built-in microphone but do not have a sound input port:
For additional information, see technical document 58764: "iMac (Flat Panel), Power Mac G4 (Digital Audio) and (QuickSilver): Sound Output Ports."
Note: The listing of these third-party products is for informational purposes only, and constitutes neither an endorsement nor a recommendation of these products.