Hi Richard, I think I'd have to dismantle the thing to figure out the type since the sticky labels identifying it have long since shrivelled and disappeared. I did consider modifying it for use on my PC but, to be honest, the thing is way too big for my uses so I just want rid of it. TTFN - Pete. -- Hardware & Software Engineer. Sound Engineer. Collector of Arcade Machines, Games Consoles & Obsolete Computers (esp DEC) peter.pachla(a)virgin.net | peter.pachla(a)vectrex.freeserve.co.uk | peter.pachla(a)wintermute.free-online.co.uk | www.wintermute.free-online.co.uk --