Roland KR-15 Owner's Manual page 179

Connection Examples:
Connection with an Apple Macintosh computer
Use a computer cable (sold separately) to connect the
Computer connector on the KR to the modem port (or printer
port) on the Apple Macintosh. Set the Computer switch to
"Mac."
When using the Macintosh "Patch Bay" utility, specify 1
MHz as the Interface Type (MIDI Interface Clock).
fig.09-
Apple Macintosh
Modem Port
Macintosh IIci
Computer cable (sold separately)
Connection with an IBM PC
Use a computer cable (sold separately) to connect the
Computer connector on the KR to the COM1 or COM2 serial
port on the IBM PC. Set the Computer switch to "PC-2."
fig.09-
IBM PC/AT
RS-232C
Computer cable (sold separately)
Chapter 10 Connecting External Devices
179