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AOpen AP57 User Manual page 4

Motherboard

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Overview
12
Voltage Regulators w/ Heatsink: The regulator is used to supply CPU
13
IrDA connector:
14
Front-panel connector:
15
IDE LED connector:
16
CPU fan connector:
17
ISA slots:
18
PCI slots:
19
Keyboard controller:
20
USB connector (optional): U niversal Serial Bus (USB). The USB is a
21
Super I/O controller:
22
COM1 connector:
23
COM2 connector:
24
PS/2 mouse connector: Connects to PS/2 mouse bracket f or
1-4
voltage.
Wireless Infrared connector, used as COM2.
Connector for front panel power reset,
suspend switches and power or green LED.
For front panel IDE LED.
+12V 2-pin connector for CPU fan.
Accepts 8-MHz ISA bus expansion cards.
Accepts 33-MHz PCI bus expansion cards
Controls keyboard input/output functions.
new 4-pin serial interface that allows easy
installation and cascading of USB devices..
SMC 669-compatible I/O control chip including
two serial ports (COM1/COM2), one parallel
port (printer), and floppy controller.
Serial port 1.
Serial port 2.
PS/2-compatible mouse. Unlike serial mouse
from COM1/COM2, the PS/2 mouse signal is
similar as the keyboard and is also controlled
by the keyboard controller.

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