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MIDI: ground loop issues with USB |
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=== Digital musical instruments ===
Digital musical instruments are another example of where USB is competitive for low-cost devices. However power over ethernet and the MIDI plug standard are preferred in high-end devices that must work with long cables. The original MIDI standard operates with cables that are several 1000s of feet, and actually costs less to implement than either USB or ethernet. USB can cause ground loop problems in audio equipment because it connects the ground signals on both transceivers. By contrast, the MIDI plug standard and ethernet have built-in isolation to 500V or more.
=== eSATA ===
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