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18 Intel Server Board S875WP1-E Product Guide
Serial Port
The server board S875WP1-E has one serial port connector and one serial port header. The serial
port A connector is located on the back panel. The serial ports’ NS16C550-compatible UART
supports data transfers at speeds up to 115.2 kb/s with BIOS support.
A DH10 10-pin serial header is available on the baseboard for an option Serial B port.
Parallel Port
The 25-pin D-Sub parallel port connector is located on the back panel. In the BIOS Setup program,
the parallel port can be set to the following modes:
• Output only (PC AT
*
-compatible mode)
• Bi-directional (PS/2 compatible)
• EPP
• ECP
Floppy Drive Controller
The I/O controller supports one diskette drive that is compatible with the 82077 diskette drive
controller and supports both PC-AT and PS/2 modes.
Keyboard and Mouse Connectors
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, reestablishes the
connection after an overcurrent condition is removed.
✏
NOTE
The keyboard is supported in the bottom PS/2 connector and the mouse is
supported in the top PS/2 connector. Power to the computer should be turned
off before a keyboard or mouse is connected or disconnected.
The keyboard controller contains the AMI keyboard and mouse controller code, provides the
keyboard and mouse control functions, and supports password protection for power-on/reset. A
power-on/reset password can be specified in the BIOS Setup program.