i'm w/ amnesiac on this one.. i own a 4200c w/ no issues. computer recognizes it, the 3 one-touch buttons work flawlessly, lamp goes on and off as expected.
great picture quality too. great 'quicky' scanner or only-used-once-and-a-while scanner. i have to agree w/ attention on the lite software though... if you are a hard-core scanner or a graphics artist of some kind, skip this scanner for the lack of software (or 2-scan requirements) alone. if you are going to use it once and a while, or for your elder family members or something, it is great!
its been a while since i've installed it, so i can't remember if i patched it or not. and i am using a newer system w/ great usb support which i'm sure makes a difference.
knowing my habits i can say that i probably patched it. i always look for the newest drivers whenever i install new hardware/software even if it is just a patch on the oem install cd...
my 2 cents!