Loose cable or assigned to the wrong virtual USB port.
If the printer does not print after the wizard finishes, you may need to manually assign the virtual USB port:
Check the official portal of the brand under which your printer was sold (often Jiangnan, Jiekai, or generic OEM portals that support the "POS-58" series driver). thermal printer jk-5801h driver
The JK-5801H is widely used with POS apps like Loyverse, iREAP, and Kyte.
Select USB from the communication port options. Loose cable or assigned to the wrong virtual USB port
Scan for available devices and look for , POS58 , or JK-5801H .
Some POS software (like Loyverse or ShopKeep) may still fail because macOS handles raw USB printing poorly. For mission-critical use, Windows is recommended. Select USB from the communication port options
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Accept the license agreement and choose your installation folder. from the printer model list. Port Selection Control Panel > Devices and Printers Right-click the printer and select Printer Properties > Ports Ensure the port is set to the correct (e.g., USB001 or USB002). Test Print : Under the tab in Printer Properties, click Print Test Page to confirm the connection. Nextar POS Software Common Troubleshooting Garbage Text
exactly where to heat the thermal paper to create an image or text. The Quest for Connectivity
The JK-5801H uses standard POS58 thermal printing protocols. If you cannot find a specific "JK-5801H" file, downloading a standard POS58 USB Thermal Printer Driver from reputable POS hardware sites will work perfectly.