Microsoft often hosts certified drivers. Visit catalog.update.microsoft.com and search “Dex DP-19.” Download the .cab file if available.
If the driver is no longer supported, consider using a generic serial-to-USB converter driver or upgrading to a newer Dex model. Download Driver Dex Dp-19 -UPD-
A: Most Dex DP-19 drivers are Windows-only. For Linux, try usblp kernel module or brlaser if it uses a common chipset. For Mac, use Boot Camp or a Windows virtual machine. Microsoft often hosts certified drivers