Had to start the scanner a number of times before it caught on. Driver is not digitally signed but Acer says 'These drivers have been tried and tested on this operating system, so are fine to install. Microsoft have now recommended that drivers are digitally signed by them. But as you can imagine this is very
expensive and not necessary'.
Device driver info after install is Driver provider Acer Peripherals Inc
Driver date Not available
Driver version 3.40.2000.1
while under Driver Details it gives
Driver files C \Windows\system32\drivers\usbscan.sys
Provider Microsoft Corporation
This is as it should be.