Solution - Apply the steps/settings specified below
a. Plug the EC Device back to to the computer, wait for the light status to established prior to opening the Embroidery Hub
b. Click to Advance Settings
c. Enable the two boxes Disabled Serial Interface and the USB Drive compatibility mode [refer to screenshot]
d Click Apply and OK
Once EC Device is ready, mount the device back to the RICOMA TC1501 and try to send out the design.