Event ID - 51

Event Id51
SourceRemovable Storage Service
DescriptionUnable to move medium from drive 0 to slot 0 in library: \\.\Changer0. Please manually eject the media.
Event InformationWhen you try to use Removable Storage or a third-party program to manage a media changer device, the device may not work correctly. Also, you may experience one or more of the following symptoms: 
You receive an error message.
The device does not come online.
Evenet id 51,175 will be logged in system log in Event Viewer.
CAUSE:
This problem occurs if you install a Storport-based miniport driver for the fibre channel host bus adapter (HBA) that you connect the device to.

Note This problem does not occur if you use a SCSIPort-based miniport driver for the HBA device. 
RESOLUTION:
A supported hotfix available from MicoSoft
Reference Links Media Changer Device Does Not Work Correctly If You Install a Storport-Based HBA Driver

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