Review Details

4-Port USB to Serial Adapter COM Retention FTDI Chipset 920K Baud Rate

Product Review (submitted on October 19, 2015):

Works perfectly out of the box with no drivers on Windows and Linux. Shows up as 4 standard com ports. You can plug several of these into single computer for even more ports.

I'm running mine at 1,000,000 baud with no problems. CTR/RTS also work as expected.