NEC POWERMATE 8100 Series, Инструкция по обслуживанию и справочник

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System Board 4-17
Serial Port 1 and Serial Port 2 I/O Addresses
Starting I/O Address Port
3F8 COM1
2F8 COM2
3E8 COM3
2E8 COM4
3F8 COM1
2F8 COM2
3E8 COM3
2E8 COM4
See Section 2, “System Configuration,” for information on resetting the port
through the BIOS Setup utility. See Section 10, “Specifications,” for the serial
interface specifications.
Serial interface signals are output through the system board’s 9-pin,
D-subconnectors. The connectors are located at the back of the system unit. Pin
assignments for the serial interface connector are included at the end of this
section.
USB Interface
The Universal Serial Bus (USB) ports allow new Plug and Play serial devices to
be added without having to open the system. One USB device may be plugged
into each USB port for direct system connection. With a hub and the proper
cabling, up to 127 USB devices can be addressed by the system. The USB
determines system resources for each peripheral and assigns them without user
intervention. Boot support for a USB keyboard is present so the system can be
booted with a USB keyboard instead of a standard keyboard.
Infrared Interface
The I/O controller incorporates an infrared interface that provides two-way
wireless communication through the IrDA window (port) on the front of the
system. The interface uses infrared as the transmission medium instead of a
traditional serial cable.
The IrDA port permits the transfer of files to or from portable devices such as
laptops and personal digital assistant (PDA) products using the LapLink
®
applications software or other software supporting IrDA data transfer. The port
supports transfers at 115.2 Kbps from a distance of 1 meter (3 feet 3 inches).