I am in the same situation as you. I need a bar printer and a receipt printer, both of which should be connected to the computer. I met your question in the test. I use a clothing system with a shop, and the settings are as follows.

Both machines have USB ports.

The software setting is simple: system setting-receipt setting-port selection. There is no need to set up the last WIN-driven barcode printer software.

Connect the machine and test the printed page. Note that a printer can't print two pages at the same time, such as USB 00 1-Pos58 (receipt machine) USB002-barcode machine, so it can print at the same time. If the print port is the same, it will only take effect at the last installation. It is impossible to print at the same time.

If your USB00 1 002 port in the Hardware Manager is valid.