TEAC FD-55GFR FDD (X68000 PRO)

[caius]

I got on YJA a set of two FDDs, they are TEAC FD-55GFR, I think these are for the PRO models:




I'm wondering what is the need of this connector on the side:




I presume it' connected to the motherboard by a flat cable for handling extra signals like Interrupt, Disk in, Option Select , etc.
You can see the flat cable in this picture:



It would be interesting to know the pinout of this connector.I presume this is only present on these models of TEAC designed for the X68000 PRO
I already connected these drives to my CompactXVI as external source,  they works but without knowing the the pinout of that connector  I can't use all the extra-functions
Could someone  with a Pro  check continuity between this extra connector and 37 pin external FDD Sub-D connector (pinout below), please?

http://gamesx.com/wiki/doku.php?id=x68000:floppy_pinout


P.S.
Do all X68000 5.25"drives lack of the front lever to clamp the disk like in the ordinaryl 5.25" FDDs?Is this done automatically when a disk is inserted?For these Teac FD-55GFR I have to do clamp the disk by manually  pulling down the whole mechanism.