User`s manual

27 Chapter 2
2.4 PS/2 Keyboard and Mouse Connector (Rear I/O)
The MIC-3369C provides Keyboard/Mouse support via J5 connector to
the rear transition board which builds in one PS/2 Keyboard/Mouse con-
nector (CN12). The package - one Y-type PS/2 keyboard/mouse cable -
provides two transferred connectors. Since these two connectors are iden-
tical, please, follow the icons on the cable to plug the keyboard and the
mouse into their correct connectors.
2.5 Serial Ports (CN3 and Rear I/O)
The MIC-3369C offers one serial port: COM1 in RS-232. With limited
front panel access, one COM1 (CN3) can be connected via a RJ-45 to RS-
232 adaptor and COM2 (CN9) interface has to be connected via rear I/O
module (RIO-3309C or RIO-3309S). These ports allow users to connect
to serial devices (a mouse, printers, etc.) or a communication network.
You can select the address for each port and disable it, using the BIOS
Advanced Setup program, covered in Chapter 5. Different devices imple-
ment the RS-232 standard in different ways. If you are having problems
with a serial device, be sure to check the pin assignments for the connec-
tor. The IRQ and address range for both ports are fixed. However, if you
wish to disable the port or change these parameters later, you can do this
in the system BIOS setup. The table below shows the settings for the
MIC-3369C board's ports:
Table 2.1: MIC-3369C serial port default settings
Port Address Default
COM1 3F8, 3E8 IRQ4
COM2 2F8, 2E8 IRQ3