Operating System Requirements: Mac OS 8.1-9.2 File Name: harmoni_install_v11.hqx File Size: 349.9 KB Description: This installer software is required with the HARMONi G3 iMac processor/FireWire upgrade card. It must be installed before the HARMONi hardware is installed. System Software Required for Installation: Mac OS 8 - Mac OS 9