AOpen AX53-1 User Manual
Chapter 1
Overview
The AX53 is a high-performance Pentiumī-based system board that utilizes
the PCI/ISA architecture. It has four single in-line memory module (SIMM)
sockets that allow memory expansion up to a maximum of 512 MB. It also
comes either with 256-KB or 512-KB pipelined-burst cache.
To further enhance system performance, the board also integrates the Intel
430HX PCIset, a super I/O controller and a PCI mode 4 enhanced IDE
controller with bus master support.
One main feature of AX53 is the green power-management function that
extends energy conservation from system components to display monitor. It
complies with the power-saving standards of the U.S. Environmental
Protection Agency (EPA) Energy Star program.
The AX53 board measures 284 mm x 208 mm (11.2 in. x 8.2 in., mini-ATX
form).
1-1
Overview
1.1 Board Layout
1 COM1 port connector 16 Keyboard controller
2 72-pin SIMM sockets 17 Multifunction connector
3 PS/2 power connector 18 Intel 82371SB ASIC
4 Two-pin fan connector 19 Intel 82439HX ASIC
5 ATX power connector 20 PCI slots
6 CPU socket 21 ISA slots
7 Floppy drive connector 22 Universal Serial Bus (USB)
8 Pipelined-burst cache connector
9 IDE1 connector 23 Super I/O controller
10 IDE2 connector 24 Voltage regulators with heatsink
11 COAST1 cache upgrade socket 25 COM2 port
12 IR connector 26 Parallel port
13 Real-time clock (RTC) 27 PS/2-mouse port
14 HDD LED connector 28 PS/2-keyboard port
15 System BIOS
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1
Cache module type
1-2
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