MSU_V2,
MSU_V2.5 (Six-Axis)
MSU_VX (DS3)

TP25 - COM 1
TP26 - COM 2
TP32 - PS
TP33 - Start
TP34 - R3
TP35 - L3
TP36 - Select
TP38 - [ ]
TP39 - X
TP40 - O
TP41 - /\
TP42 - R1
TP43 - R2
TP45 - L1
TP46 - L2
TP47 - DL
TP48 - DD
TP49 - DR
TP50 - DU
TP62 - V (Common Line for Home Button)
There is no TP spot for the COM 3 line on this version of board, best place to use is one of the solder joints of the L3/R3 buttons.
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Hello RDC I appreciate the help that you are giving out to people on the forum and also as for myself. This is an old forum but hopefully I will get a reply from you. As the pictures and details you had given out, the picture above is the same model as mine and I would like to modify it but I have a few questions to ask before I start because I'm slightly confused and lost. Pretty much I got tactile switches. I would like to set my tactile switches as my "X" button and my "O" button. Now that I've got my wires set to.. TP39 and TP40 would I have to set 2 more wires on TP26 for com2? I've seen tutorials on "MSU_VX5" they would set 1 wire to the top pin of the chip ("X") 2 wires into TP18 ("COM2") and TP20 ("O") which I assume. but as for mine will I also set 2 wires onto TP26 (COM2)?
Appreciate for the help. Thanks.