the se/30 was released January 19, 1989
it was during this time that alot of sound modules included a "To host " port that alot of people connected straight to
the mac se or se/30 serial port but any mac serial interface is going to work on an se/30 as far as i know?
see my websites section here:
http://www.oldschooldaw.com/forums/index.php/board,84.0.htmli think a great match for an se/30 is the Opcode Studio 3 interface
http://www.oldschooldaw.com/forums/index.php/topic,2030which was released the same year as the se/30
i bought mine with the intention of pairing it with an se/30
but the se/30 is a tought machine to score nowadays
if i were u i would just use that studio 4 that you already have
heres a video for you
[youtube]http://www.youtube.com/watch?v=a_msxMQIlw8[/youtube]
ok sorry i thought he was going to show a working midi interface but i guess not