Looking for relicts of Leica TCS-SP2

25 year old Leica TCS SP2 is far out of professional awareness but it may be still charming for hobby use. I have collected the AOTF-scanhead, supply station plus other hardware complete and the right LCS version as well. Only a nondescript part is missing. Does anybody of you still hold a dongle, which looks like a simple gender changer and at that time was located on the parallel printer port?
Looking forward to hear from you!