Add two rs232 serial rj45 connections to a pc or server through usb with this din rail and wall mountable adapter the icusb2322rj 2 port industrial usb to serial rj45 adapter wallmount and din rail allows you to add two rs232 serial connections using rj45 signaling ports to a pc or server through a single usb 20 port the rs232 to rj45 adapter features com port retention to maintain your port number assignments across a reboot and supports serial data rates up to 921 kbps the included din