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SCSI Port
The SCSI port is used for data storage devices such as optical jukeboxes. The AIC-7860 is the
system’s SCSI controller. All SCSI devices connected to the SCSI port interface to the controller.
Refer to “SCSI Controller” on page 74 for more information.
Certain restrictions are applied for the number and type of SCSI devices, and cables lengths used for
the devices. Refer to the section “Adding External Peripherals” in Chapter 7 for more information.
Refer to page 71 for the SCSI pinout. See table “J26, MCBL102A, SCSI.”
Keyboard port, mouse port
The keyboard and mouse ports are PS/2 style, 6-pin ports. They are not interchangeable.
Refer to page 74 for information about the mouse and keyboard functions of the FDC37C932
controller.
J5 Keyboard
J6 Mouse
Pin Signal Pin Signal
1 KDATA 1 MDATA
2 Spare 2 Spare
3 Ground 3 Ground
4 VCC 4 VCC
5 KCLK 5 MCLK
6 Spare 6 Spare
Serial Ports
The serial ports (also referred to as RS-232 asynchronous communications ports, or COM
ports) can connect modems, printers, peripherals and other computers to the system. The serial ports
(labeled 1 and 2) are 9-pin, male DB9 connectors. If connecting a serial device with a 25-pin DB25
connector, use a 25-pin to 9-pin adapter cable to mate with the serial port on the system. Only shielded
cables should be used with the serial ports.
Refer to page 74 for information about the serial port functionality of the FDC37C932.
COM1/COM3
COM2/COM4
Pin Signal Pin Signal
1 COM1 DCD 1 COM2 DCD
2 COM1 RD 2 COM2 RD
3 COM1 TD 3 COM2 TD
4 COM1 DTR 4 COM2 DTR
5 Ground 5 Ground
6 COM1 DSR 6 COM2 DSR
7 COM1 RTS 7 COM2 RTS
Pin
Signal Pin Signal
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