Metrohm VoltIC pro I - Manual (Page 10)

Application Bulletin 356
Installation instruction for «VoltIC pro I»
Page 10 of 18
Do not share this printer, do not print a test page and finish
the printer wizard.
Configure the newly created «RS Printer» go to «Start» 
«Devices and Printers», right-click on the «RS printer» and
select «Printer properties»
Check the selected COM-port and the settings under
«Ports» and «Configure Port…»
Check the settings under «Advanced»: