If 'this' means the Sonnet card, the ' Sonnet Processor Upgrade' v2.3.1 (with a space character in its name to ensure that it loads early in the startup process), is presumably already in the Extensions Folder. If it is there, you will see it amongst the first icons marching across the screen at startup. The other add-ins will also have need for software, depending as their makers were Apple or third parties.

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