Add an RS-232 port to your USB only PC. Isolated to protect PCs and laptops from dangerous surges and spikes on the network. Windows automatically configures the serial output as an additional COM port, compatible with your Windows application. If you require a locked serial number, select model number USO9ML2-LS.
Serialized – every unit is assigned a unique COM port, install process required for every unit, ideal application: fixed locations
Locked Serial Numbers – Same type model numbers shares the same COM port, requires only one install process for each model type, ideal application: field service