UPort 1200 Series (2-port) datasheet
Is it possible to set fixed serial port names on the UPort 1250 or 1250I without them being automatically allocated when the unit is plugged in, or when the computer is booted?
Yes, while most USB-to-Serial products are unable to set fixed COM names to the host PC, the Moxa UPort 1250 & 1250I has to advanced features that allows for fixed COM names.The UPort uses Moxa's COM Preserver™ which will allow COM names to remain on the device. The same COM names can be created on a different host PC when using COM Preserver™. This feature means that there is no need to modify applications, or rebuild projects every time you install a new operating system or upgrade a PC.