On Tue, 11 Jan 2000, Douglas Meade wrote:
>M7552 - I've no idea what this is, but was told it might be a CD 
>  controller.

  ...by me.  Definitely a controller for an RRD50 CDROM drive. :)

              -Dave McGuire

>M7740 - Listed as a Q-22 bus to LESI bus adaptor, used on disks with 
>  MSCP RC25 controller.  Also called KLESI-QA.  It connects to a plug
>  on the patch panel with three rows of holes, 50 in total, that looks
>  like the plug on the bottom of some of those VS2000's that have the 
>  connector for the external disk and tape drive.  What kind of disks
>  can be attached to it?

  That's used with the RC25 and I believe certain types of tape drives...TK25
perhaps, and maybe some of the later low-end 9trk drives?

                       -Dave McGuire