Ghost 15 Scans Slowly

Hi. I have an HP desktop running Win7 Pro.  In addition, I have two external USB drives attached as backup locations.

 

Whenever I start up the main interface for the program, Ghost scans  to detect all of the attached drives.  When my USB (2.0) drives are attached it can take up to 5 minutes to complete the scan.

 

Is there a way to speed this up without removing the USB drives?

 

TIA