I bought this and installed the hardware/software. Then PC freezes up after use of scanner for 30 seconds or so. Sometimes it freezes even without using scanner. Tried latest driver on their web, no help. Turns out they have driver to solve freeze problem for some other version of their scanners, but not for this. Promptly returned.I am disturbed by the current practice of software/hardware industry for shipping a product without thorough QA. I am extremely happy with the current practice of electronic dealers for letting buyers refund their money without much probing.Do not recommend if you have NT 4.0 (even though the box says it is supported). I have Service Pack 6 and SQL Server 7 installed, not sure if that's the reason. No time to find out.Bryan