Keyspan USB serial adapter

Jeremy Chadwick koitsu at
Wed Sep 17 04:24:28 UTC 2008

On Tue, Sep 16, 2008 at 11:33:22PM +0200, Aragon Gouveia wrote:
> I'm on the market for a USB serial adapter.  The Keyspan USA-19HS gets a
> lot of good reviews for its performance, but I've noticed previous Keyspan
> models have a history of not supporting FreeBSD due to firmware issues. 
> The 19HS is listed in /usr/src/sys/dev/usb/usbdevs with nothing noted about
> firmware (as opposed to the older 19WQ).  Can I assume that the firmware
> problems of the past aren't relevant to the current 19HS?
> Can anyone confirm if a USA-19HS works on FreeBSD 7-STABLE right now?

Since you're still in the market: I've heard wonderful things about any
of the USB serial adapters that use the Prolific chip; see uplcom(4).
Others apparently are known for dropping characters on occasion.

| Jeremy Chadwick                                jdc at |
| Parodius Networking              |
| UNIX Systems Administrator                  Mountain View, CA, USA |
| Making life hard for others since 1977.              PGP: 4BD6C0CB |

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