The installer will place .inf , .sys , and .dll files into C:\Windows\System32\spool\drivers\ .
| Problem | Solution | |---------|----------| | Driver not found after connection | Re-run installer as admin; try different USB port/cable | | Printer not printing | Check ribbon/paper; ensure green LED is steady | | Color mismatch | Run color calibration from HiTi Utility | | "Communication error" | Restart printer and computer; reinstall USB driver | | macOS not detecting printer | Allow "HiTi Software" in Security & Privacy → Privacy → USB | Hiti S420 Printer Driver Setup Download
Do not download drivers from random third-party "driver download" websites. Many contain outdated, unsigned, or malicious files. Always use official Hiti channels. The installer will place