StarTech.com USB to RS232/RS485/RS422 8 Port Serial Hub Adapter - Industrial Metal USB 2.0 to DB9 Serial Converter - Din Rail Mountable
StarTech.com USB to Serial Adapter - 2 Port - RS232 RS422 RS485 - COM Port Retention - FTDI USB to Serial Adapter - USB Serial
StarTech.com USB to Serial Adapter - 2 Port - Wall Mount - Din Rail Clips - Industrial - COM Port Retention - FTDI - DB9
StarTech.com USB to Serial Adapter Hub - 4 Port - Bus Powered - DB9 (9-pin) - USB Serial - FTDI USB to Serial Adapter
StarTech.com USB to Serial Adapter Hub - 4 Port - Industrial - Wall Mount - Din Rail - COM Port Retention - FTDI USB Serial
StarTech.com USB to Serial Adapter Hub - 8 Port - Industrial - Wall Mount - Din Rail - COM Port Retention - FTDI USB to RS232
StarTech.com USB to Serial Hub - 16 Port - COM Port Retention - Rack Mount and Daisy Chainable - FTDI USB to RS232 Hub
StarTech.com USB to Serial Hub - 8 Port - COM Port Retention - Rack Mount and Daisy Chainable - FTDI USB to RS232 Hub
SYBA Multimedia 2-port Serial PCIe, x1, Revision 1.0a, (Full & Low Profile)
Tripp Lite USB to Serial Adapter Converter RS-422/RS-485 USB to DB9 1-Port
Tripp Lite USB to Serial Adapter Converter RS-422/RS-485 USB to DB9 2-Port
Tripp Lite USB to Serial Adapter Converter RS-422/RS-485 USB to DB9 4-Port