Go to "Control Panel" > "Devices and Printers" > Right-click XP-K200L > "Printer Properties" > "Ports." Ensure a USB Virtual Port is selected.
Check the box to "Set as Default Printer" to ensure your POS software recognizes it automatically. xprinter xpk200l driver link
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Ensure the 80mm thermal paper is loaded correctly (thermal side facing the print head). Go to "Control Panel" > "Devices and Printers"
Open the downloaded .exe file (for Windows) or .dmg (for Mac). xprinter xpk200l driver link