Interestingly, the state of Wyoming has registered more than 100% voter turnout in the last two presidential elections: 101% in 2000, and 106% in 2004. No other Wyoming elections since 1978 have shown this anomaly...

WY voter turnout records
Voting machine type by county

...unfortunately, I did not find records showing voter turnout percentages by county, and so cannot directly correlate this anomaly with any specific type of voting machine.