interesting, didnt know the original 1990 MTP & 1993 MTPII supported IBM PC, XT, AT, PS2 and Compatibles

MTPIBM REV-A (1991) FOR USE WITH MIDI TIME PIECE (8-bit)
MIDI EXPRESS CARD REV-2 - EXPRESS PC & MTP CARD (1993) - without MPU401 near DIP switch
MIDI EXPRESS CARD REV-3 - EXPRESS PC & MTP CARD (1993) - with MPU401 near DIP switch
PC Link ISA Card

this is the isa card that can use MTPI&II and Express PC interfaces *and* supports MPU401. this card is the most rare card ever. priceless.

this also means that the above chart is wrong as Midi Time Piece I & II should say PC yes