Then, you can click [Allow]. *On macOS Catalina 10.15, [Legacy System Extension] pop-up may appear after clicking [Allow]. In such a case, click [OK] and close the pop-up. 5) When DJ equipment is connected to your Mac, disconnect and re-connect the USB cable. Youʼll need this process only when you install the driver software to one of the affected OS versions. The above procedure is not necessary for OS versions other than the affected OS versions. 3/5
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