Avoid third-party “driver download” websites that bundle adware or malware. Always obtain your driver from a verified source.
The driver’s OPOS configuration is missing cash drawer control pins. Fix:
Insert your labels with the printable side facing upward . Snugly slide the plastic paper guides against the edges of the liner. rh-40 thermal printer driver
Most RH-40 printers use a generic (because they are rebranded Chinese OEM units).
The printer feeds a blank label, then stops. Fix: Insert your labels with the printable side
By following this guide—downloading the correct driver, installing manually via INF file, troubleshooting common errors, and optimizing for your POS system—you eliminate 99% of printing failures. Remember: never trust automatic updates, always keep a backup of the working driver on a USB stick, and test the cash drawer command after every revision change.
In the drop-down menu selection box, do not leave it on generic options. Select Select Software or Choose Driver , search for the installed RH-40 profile, highlight it, and click Add . Essential Driver Settings The printer feeds a blank label, then stops
While installation is generally straightforward, the order of operations matters significantly for thermal printers. Follow this "Best Practice" method to ensure a smooth setup.
Using the official RH-40 thermal printer driver ensures: