According to the Apple Device Support Reference Materials, one of the basic troubleshooting steps for peripheral devices is to unplug and reconnect the device1. This can force the Mac to reinitialize the connection and reload any device-specific drivers. Other options, such as connecting the peripheral to a USB hub, unplugging other devices on the same bus, or connecting the peripheral to another Mac, may not necessarily reinitialize the connection or reload the drivers, and may introduce other issues or complications. References: 1: Apple Device Support Reference Materials, Section 2.3.1, "Basic Troubleshooting Steps".
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