MBL Duo 6TB & My Passport 1TB

I have 2 6TB MBLD’s and 2 1TB MyPassprots.  Only one of my Passport drives is yeilding this error when I plug it into the usb port on either of my MBLS’s:

Following events are generated on your MyBookLiveDuo .Event title:Unsupported USB deviceEvent description:An unsupported USB device has been detected (vendor: %1, model: %2, serial number: %3).Severity:warnEvent code:1120Event time:10-02-2014 09:29:25 PMFirmware version:	02.43.03-022Please help!!!


Connect the passport drive to a computer and run a diagnostic on it using WD DLG.