Hi Brian,
Cash Drawer will need to be set up using opos... not the windows driver. (I could not find the opos driver online)
Call M-S Cash Drawer @ (800) 544-1749 Ask to speak with Rashad Vick and or tell the reception... you need to set up usb with opos cash drawer.
He will email you a zip file which you will unzip and run the install program.
In RMS simply enable the cash drawer for the register with OPOS device name: OPOSTest
It seemed to have worked!
PLEASE NOTE The OPOS utility did not allow us to create a different named instance...which simplied things even further.
Marc Wagner snipped-for-privacy@msn.com