“StarTech.com USB to RS232/RS485/RS422 4 Port Serial Hub Adapter – Industrial Metal USB 2.0 to DB9 Serial Converter – Din Rail Mountable – Industrial 4 port serial hub 15kV Level 4 ESD – IP30 rating metal USB to serial adapter converter w/ each DB9 port set to RS232/RS422/RS485(2wire/4wire) baud rates up to 921.6Kbps – Desk/wall/DIN rail mount – 6ft USB cable – 12V power adapter/5V USB SERIAL ADAPTER 4PORT” has been added to your cart. View cart