I can't find any Windows 10 drivers for the SII DPU-414. According to the Technical Details tab at https://www.compart.pl/en/produkty/mobile-portable-thermal-printer-dpu-414/ , this thermal printer has drivers for Windows 2000, XP, Vista, 7 and 8. This suggests that the Windows 7/8 drivers are unsigned and will not work with recent Windows 10 versions. Microsoft insisted on signed drivers starting with Windows 10 Anniversary Update in 2016. (In 2016 there was a way to test an unsigned driver in Windows 10, see Google ("windows 10 unsigned drivers"). I don't know if these still work.)
I hope this helps. Filling out the form on the Compart.pl page Inquiry tab may let you get a link to the older drivers for the DPU-414. You can try using a virtual machine with Windows 7 or 8 under Windows 10 Pro or Enterprise, if you can find a license for the OS.
Answers & Comments
I can't find any Windows 10 drivers for the SII DPU-414. According to the Technical Details tab at https://www.compart.pl/en/produkty/mobile-portable-thermal-printer-dpu-414/ , this thermal printer has drivers for Windows 2000, XP, Vista, 7 and 8. This suggests that the Windows 7/8 drivers are unsigned and will not work with recent Windows 10 versions. Microsoft insisted on signed drivers starting with Windows 10 Anniversary Update in 2016. (In 2016 there was a way to test an unsigned driver in Windows 10, see Google ("windows 10 unsigned drivers"). I don't know if these still work.)
I hope this helps. Filling out the form on the Compart.pl page Inquiry tab may let you get a link to the older drivers for the DPU-414. You can try using a virtual machine with Windows 7 or 8 under Windows 10 Pro or Enterprise, if you can find a license for the OS.
Cindy Wells