1 EPSON USB Printer Port Monitor 2 Windows 4.0 3 EPUSBMN.DLL 4 Windows NT x86 10 EPUSB.SYS 20 .DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\PrnPortsMRU 21 Enum\LPTENUM 256 Could not install the USB Port Monitor 258 The system settings had to be changed in order to correctly support multiple instances of this device.\n\nThe computer must be rebooted to complete the installation of this device.\n\nYou must close all applications and then press the OK button. 259 System Settings Change 260 This version of Windows may not be supported. 261 This Operating System may not be supported.