Ensure the RJ11 cable is securely connected and that the "Cash Drawer" option is enabled in the Device Settings tab of the driver.
is officially compatible with a wide range of operating systems according to the Nextep Product Page : : Windows 2003, XP, 7, 8, 10, and 11. Other Systems : Linux, macOS, and iOS. Quick Setup Specifications Printer Type : Direct Thermal. Paper Width : 58mm. Interfaces : USB and RJ11 (for cash drawers). Print Speed : 90 mm/sec. NE-510 - mini impresora - NEXTEP nextep ne510 driver windows 7 link
If the executable doesn't work, you can force the installation: Open from the Start Menu. Click Add a printer > Add a local printer . Choose the port (usually USB001). Ensure the RJ11 cable is securely connected and
As for the link, I was not able to find any specific links that are safe and working. However, you can try searching on websites like: Quick Setup Specifications Printer Type : Direct Thermal