Leaving Print Bridge & Printer set to "-- None (browser print) --" means that receipt falls back to printing through the terminal's own browser print dialog (e.g. a laptop connected to a USB/Wi‑Fi printer via the OS print driver) instead of routing to a networked printer through a Bridge Device. This isn't just a cosmetic default: the print-receipt request itself checks for a saved bridge/printer on that role and returns "print via browser" whenever one isn't configured.