Dynex DX-UBDB9 serial to USB

Has anyone been able to get this working? I've tried both minicom and cu with the appropriate options, but I'm not getting any feedback from the serial console. I have a Windows VM that works fine though, so I know the device isn't broken.

Here's some info:

[ryanlam@seraph ~]$ uname -r
2.6.32-431.el6.x86_64

[ryanlam@seraph ~]$ dmesg | grep pl2303
USB Serial support registered for pl2303
pl2303 2-1.8.2:1.0: pl2303 converter detected
usb 2-1.8.2: pl2303 converter now attached to ttyUSB0
usbcore: registered new interface driver pl2303
pl2303: Prolific PL2303 USB to serial adaptor driver

[ryanlam@seraph ~]$ lsusb | grep Prol
Bus 002 Device 004: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port
[ryanlam@seraph ~]$

[ryanlam@seraph ~]$ sudo cu -l /dev/ttyUSB0 -s 9600
[sudo] password for ryanlam:
Connected.

I'd rather not have to go to Windows every time I need to console into a switch/router, so any help is very much appreciated. :)

Thanks everyone.