Null modem to USB wire not working

[David DEMELIER]

Hi,

I just bought a null modem to USB from Profilic and it isn't
recognized by FreeBSD.

It's a chipset Prolific Technology Inc.

Sep 19 21:19:15 Melon root: Unknown USB device: vendor 0x067b product
0x2303 bus uhub6
Sep 19 21:19:15 Melon kernel: ugen6.2: <Prolific Technology Inc.> at usbus6

Is there any driver I can use or I need to buy another one?

Kind regards,

-- 
Demelier David