MPOS Dual display only shows Amount due

Hi all,

We enable "Dual display in use" for a Modern POS in "Pos hardware profile".

But it only displays "Amount due".

I know there is a option "Line display", but it seems there is not any "Windows driver " implementation in Microsoft.Dynamics.Commerce.HardwareStation.Peripherals.dll , so that we must user OPOS driver.But we use http://www.posbank.com/products/pos-terminals/apexa_g.html and  dual dispaly(Customer display) connects by VGA to cashier display and it does not have any OPOS driver.

Any idea?