After downgrading a client’s new Tecra S10 to Windows XP Professional with Service Pack 3 we ended up with a mysterious device in the Device Manager.
As it turns out, the device is a Prolific PL-2303 USB to Serial Bridge.
We needed to download the driver from here:
Note that the driver we downloaded was released in July of 2009 and is v184.108.40.206.
Once we extracted the zip file we ran the update driver routine from within the device’s properties.
Once properly installed we saw the following in the Device Manager:
Prolific USB-to-Serial Comm Port (COM4)
One other oddity with this downgrade was the default Realtek audio drivers being knocked out when we set the laptop into its port replicator. We needed to download the latest driver from Toshiba’s Web site for this particular model.
Microsoft Small Business Specialists
Co-Author: SBS 2008 Blueprint Book