I was reading an application note about a Puregas heatless dryer, and one of the applications mentioned that some IBM computers require a dry air purge. Does anyone know which computer(s) this is referring to? The URL of the booklet is http://puregas.com/industrial/pdf/Drying_Compressed_Air_Booklet.pdf These things look like they could be useful when small CFM ratings of dry air are required.