How odd. I've looked through every plausible DEC QBUS document I've got, and none mention the MSV11-M! They all jump straight from the MSV11-L to the MSV11-P. E.g. the "Microcomputer Products Handbook" from 1985 has the MSV11-L, then the MSV11-P, then the MSV11-Q. (Although it doesn't have the MSV11-J either, though - although my MSV11-J manual says the first version was '85.) I wonder why? Was the MSV11-M a later card? (Well, it must have been...) There's a Micro-Note (#28) from June '85 which mentions the MSV11-M, so it's not _that_ late. However, e.g. the "Supermicrosystems Handbook", from 1986, mentions the MSV11-J, then the MSV11-Q, then the MSV11-P! I wonder why they left it out? It provides up to 1MB on a dual card, whereas the MSV11-P only does 512KB on a quad card? So it's not as if it were already obsolete by 1986 - it's clearly better than something they _did_ include! Very odd. Noel