The XP-Q90EC uses ESC/POS commands. To use with POS apps:
⚠️ Avoid “driver download” pop-ups from unknown sites. Never pay for a free driver. xprinter xp-q90ec driver download
The safest and fastest method is to use the mini-CD or USB drive included in the printer box. It contains the exact driver version for your specific hardware batch. The XP-Q90EC uses ESC/POS commands