Hello all, here is the connection schematics from symmetricoms designer manual for the X72. So you see, that there is no need for an25 pin connector on the boards side :) If someone wants to download the X72 designer guide here it is: http://www1.symmetricom.com/media/files/support/productmanual/man-x72.pdf Regards Chris > Ed Palmer > <https://www.mail-archive.com/search?l=time-nuts@febo.com&q=from:%22Ed+Palmer%22> > Thu, 17 Aug 2017 22:11:47 -0700 > <https://www.mail-archive.com/search?l=time-nuts@febo.com&q=date:20170817> > > > I did some more work on the HP printer cable that uses this connector. > Here's what I found: > 1. Pin 25 on the X72 connector is unconnected. > 2. The connector is IDC. It's possible to open it up and add the extra > lead, but like all IDC connectors, it's rather fragile. 3. Of the 25 > leads in the cable, 10 aren't connected through. However, the > disconnect is at the DB-25 end. All 25 leads are wired into the X72 > end. 4. HP used both JST and Molex connectors. From the pictures I've > found, I can't tell if the Molex connectors can be opened. > 5. The connector appears to be model DMX as shown here: > https://web.archive.org/web/20050313045224/http://www.jst-mfg.com:80/pdfE/eDMX.pdf > It looks like you have to order all the pieces seperately (?). > JST Connector: http://www.ebay.com/itm/182682094117 . Note the angled > corners near the cable. Molex Connector: www.ebay.com/itm/182474574277 > . Note the corners are closer to square than on the JST connector. The > ideal result would be to find a source of new,unused connectors, but > these printer cables appear to be an alternative. > Ed -- Regards Christoph Kopetzky