Specifications

Serial Ports

The motherboard has two 9-pin D-Sub serial port connectors located on the back panel.

The NS16C550-compatible UARTs support data transfers at speeds up to

115.2Kbits/sec with BIOS support.

Parallel Ports

The connector for the multi-mode bi-directional parallel port is a 25-pin D-Sub connector

located on the back panel of the motherboard. In the Setup program, there are four

options for parallel port operation:

• Compatible (standard mode)

• Bi-directional

• Bi-directional Enhanced Parallel Port (EPP). A driver from the peripheral

manufacturer is required for operation.

• Bi-directional high-speed Extended Capabilities Port (ECP)

Floppy disk Controller

In the Setup program, the floppy interface can be configured for the following floppy

drive capacities and sizes:

• 360 KB, 5.25-inch

• 1.2 MBYTES, 5.25-inch

• 720 KB, 3.5-inch

• 1.44 MBYTES, 3.5-inch

• 2.88 MBYTES, 3.5-inch

Keyboard and Mouse Interface

PS/2 keyboard and mouse connectors are located on the back panel. The 5 V lines to

these connectors are protected with a PolySwitch

†

circuit that, like a self-healing fuse,

re-establishes the connection after an over-current condition is removed.

Power to the computer should be turned off before a keyboard or mouse is connected

or disconnected.

The keyboard controller also supports the hot-key sequence <Ctrl><Alt><Del> for a

software reset. This key sequence resets the computer’s software by jumping to the

beginning of the BIOS code and running the Power-On Self Test (POST).

Infrared Support

On the front panel I/O connector (pins 6-11), there are six pins that support Hewlett

Packard HSDL-1000 compatible infrared (IR) transmitters and receivers. In the Setup

program, Serial Port 2 can be directed to a connected IR device. The connection can