| 摘要 |
A disc drive may provide data communications to a host using a universal serial bus ("USB") interface. Activation of the USB interface may be triggered upon insertion of a disc into the disc drive. A connection unit may activate the USB interface by providing power to the USB interface when a disc switch detects that the disc has been inserted into the disc drive. The connection unit may deactivate the USB interface by no longer providing power to the USB interface when the disc switch detects that the disc has been ejected or no longer is in the disc drive.
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