The short answer
The print dialog chooses a queue, not necessarily the physical printer you are standing beside. Duplicate names, virtual printers and old network configurations can send a job elsewhere.
Where this applies
Windows and macOS print dialogs and printer lists. Advanced port changes on managed or shared printers belong to an administrator; ordinary users can still verify the selected destination.
Identify the right device and prepare
Record the printer's physical model and location, the chosen queue's name and whether it uses USB, Wi-Fi, Ethernet or a shared host. Do not guess an IP address from an old printout.
Work through the checks in order
A laptop has both 'Office Printer' and 'Office Printer (copy 1)' after a network move. The older entry reports offline, while the newer queue prints; changing drivers on the wrong entry will not help.
- In the application print dialog, read the entire selected destination; distinguish a physical printer from Print to PDF and similarly named queues.
- Inspect the printer list for duplicates or old entries; choose the entry corresponding to the current connection and physical device.
- Print a one-page test document while watching both the selected queue and the actual printer.
- If the queue reports completion but nothing emerges, confirm its connection or server with the owner or manufacturer instructions before changing any advanced port.
Expected result and next branch
The correct queue shows the test job and the expected physical printer produces it. Record that queue as the preferred destination if the OS allows.
If the right queue receives the job but it remains waiting, check offline and stuck-job diagnostics. If it disappears without output, inspect printer errors and ask the print server administrator where it routed.
Safety and limits
Do not change raw port settings or remove shared queues on an organization-managed computer without authorization; this can affect access and troubleshooting records.