Just use a normal jumper on pins 2 & 3 ! see :
http://www.planetz.com/phpBB2/viewtopic.php?t=23331
http://www.planetz.com/forums/viewtopic.php?t=23125
Tested with Protools LE 7.3.1 cs4 with vst to Rtas adapter w/ Mbox2 mini
Nuendo 3.2 and RME HDSP 9652