Serial Console Output Garbled

[Robobeaver6]

I am using a working Cisco console cable with a Prolific USB serial adapter.  It connects to switches fine.  I have tried setting the laptop and serial console in opnSense, to both 115200 and 9600 (same on both ends), but in both situations I get garbled output on the laptop.  The Settings on the laptop are 8n1 with the terminal emulation set to xterm.

ps on the FW shows that getty is running using the 3wire.9600 profile on ttyu0

does anybody have any idea why the output is garbled?   I don't know what else I can change.