Dot matrix printers from the same generation often share the same internal command sets (usually ESC/P or IBM Proprinter). WEP releases "Universal Driver Packages" designed to work across a wide range of their 24-pin and 9-pin printers.
Before touching the installer, perform these checks to avoid common failures: wep csx 450 printer driver for windows 7 64 bit
Here is helpful content for finding the printer driver for Windows 7 64-bit . Dot matrix printers from the same generation often