Product Id: 19475168
Description: Black Box Opto-Isolator USB to RS-422/RS485 - Serial adapter - USB - RS-422/485
Mfr Part #: SP390A-R2
MSRP: $186.46With this compact optically isolated device, you can protect your PC from dangerous spikes and surges on the RS-485/RS-422 network. Simply plug it into your PC's USB port (using an optional USB Type A - Type B cable) and configure its DIP switches for 2- or 4-wire operation. There's no need to use any ISA or PCI slots or IRQs. Windows automatically configures the output as an additional COM port.