What is the proper DC power supply voltage for an

Hello! You can actually get this directly from Visioneer for $19.99.
http://www.visioneer.com/products/parts.asp?PN=9220
Otherwise the power specs in the manual are here.
Power supply Input voltage/frequency 100 Vac, 50/60 Hz (Japan) 120 Vac, 60 Hz (North America) 230 Vac, 50 Hz (Europe) Output voltage/watt 12 V DC, 15 watt maximum
http://support.visioneer.com/downloads/Manuals/9220/9220_Install.OT3.EN.pdf
If this helps, please give a positive rating. Good luck to you!

log onto the manufacture website and down load the vista driver for your scanner

Power requirement is 12 VDC 1 amp.

Power supply
Input voltage/frequency 100 Vac, 50/60 Hz (Japan)
120 Vac, 60 Hz (North America)
230 Vac, 50 Hz (Europe)
Output voltage/watt 12 V DC, 15 watt maximum

It is listed on the bottom of the scanner as: DC 12v 1.25A - -(+)

my driver cd broken i need the drivers for visioneer fu66bg 5800

After downloading the visioneer 9420 driver file (found on the visioneer site, but before installing it, remove your old 8100 driver, then install the 9420 driver by running the .exe file you downloaded from visioneer. Then, use Device Manager, go to -update device drivers and in the listing you should see the 8100 listed. Double click on it, click on -update, go to -browse my computer for driver software, then go to -let me pick from a list, then you should see the 8100 scanner appear, click on it, click on next, and then it will install the 9420 driver. My 8100 is working great on a vista system. Don't get rid of that scanner! It works!

Verified to work with Vista Home Premium x64 (should work for x32 as well):


1. Make sure your 8100 is unplugged.


2. Go to Visioneer's website and download drivers for the OneTouch 9420 scanner:

http://support.visioneer.com/products/home/9420/downloads_1.asp


3. Install the drivers. Nothing will work... yet, don't worry.


4. Now plug in your 8100. You'll get a message saying that Vista wants to find drivers. Select "Ask Me Later" or just cancel.


5. Next, open up Control Panel and then Device Manager. Find your 8100 in there (probably listed as "Unknown Device") and then right click on it and say "Update Driver Software". Now click "Browse My Computer For Driver Software" then "Let Me Pick From A List Of Device Drivers On My Computer".

6. Scroll down to "IMAGING DEVICES" then find Visioneer, then you should see the "Visioneer 9420" driver. Select it. You'll get a warning from Vista, but continue anyways. That's it... everything should work.

You need up-to-date driver software to detect it. Check your driver software availability.

"download"?? You don't download, you install. Have you considered that the scanner might not be compatible with Vista? Here's the Visioneer site: http://support.visioneer.com/products/home/EOL/8100/downloads.asp