Compare StarTech.com USB to Serial Hub - 8 Port - COM Port Retention - Rack Mount and Daisy Chainable - FTDI USB to RS232 Hub $288.91 Add To Cart Quick Look
Compare StarTech.com 4-Port Industrial USB to RS-232/422/485 Serial Adapter - 15 kV ESD Protection - USB to Serial Adapter $273.44 Add To Cart Quick Look