Datalogic QuickScan QBT21 Series Quick Reference Manual page 30

Selecting the Base Interface Type
RS-232
RS-232 for use with OPOS/UPOS/JavaPOS
USB COM to simulate RS-232 standard interface
a. Download the correct USB COM driver from www.datalogic.com
USB-OEM
(can be used for OPOS/UPOS/JavaPOS)
22
RS-232 standard interface
Select RS232-STD
RS-232 Wincor-Nixdorf
Select RS232-WN
Select RS-232 OPOS
Select USB-COM-STD
USB-OEM
Select USB-OEM
a
QuickScan™ QBT21X1