On Fri, Jul 13, 2001 at 07:42:27PM -0400, Master of all that Sucks wrote:
> 
> Hi.  I seem to find this connector with 50 pins in three rows in a D-shell
> on my VAXservers and VAXstations.  I even have one or two on my DECsystem
> 5840.  Could someone tell me what they are?  Three rows.  17 - 16 - 17.

it's the MFM "Extention" cable.  you can put external MFM devices on it.

-brian