AOpen AX4SG-U Easy Installation Guide

7. Support USB 2.0 Connector
6. Memory Module (128-Bit DDR Dual Channel)
9. Support LAN onboard
In the past, we used to have 64-bit memory bandwidth for memory access. No matter how
many memory modules have been installed, though capacity added, the speed of access
remains the same. With 128-bit dual channel introduced, it doubles the memory
bandwidth up to 6.4GB in advanced 128-bit mode. Only AX4SG and AX4SPE series
support DDR 400/333/266 with maximum capacity up to 4 GB in Dual Channel mode;
AX4SPB series support DDR 400/333/266 with maximum capacity up to 2 GB in Single
Channel mode.
This motherboard provides eight USB 2.0 ports to connect USB devices, such as
mouse, keyboard, modem, printer, etc. There are four ports on the back panel. You can
use proper cables to connect the Front USB connector to USB modules or front panel of
chassis.
8. AGP 8X Expansion Slot
This model provides an AGP 8X slot that is the latest AGP specification. The AGP 8X calls
for the bus to operate at the basic AGP 66-MHz clock frequency and the bandwidth are
2.1Gbytes/s. It is a great improvement on the performance of 3D graphic. AGP supports
only memory read/write operation and single-master single-slave one-to-one only. AGP
uses both rising and falling edge of the 66MHz clock, for 2X AGP, the data transfer rate is
66MHz x 4bytes x 2 = 528MB/s and AGP 4X mode, 66MHz x 4bytes x 4 = 1056MB/s. Now
the transfer rate is 66MHz x 4bytes x 8 = 2112MB/s. You can also adjust AGP voltage in
BIOS within a range from 1.5V to 1.6V. For AX4SG series motherboard, it integrates VGA
En
g
ine in chi
p
set and AGP 8X slot su
pp
ort ADD
(
AGP Di
g
ital Dis
p
la
y
)
cards.
Pin 1
On the strength of Gigabit LAN controller (-UL series) or Realtek 10/100Mbps LAN
controller (-UN series) on board, this motherboard provides 10/100 Mbps (for Gigabit LAN,
it is 10/100/1000 Mbps) Ethernet for office and home use. To –U series motherboards, they
do not support LAN onboard. The Ethernet RJ45 connector is located on top of USB
connectors. The right hand side LED indicates link mode, it lights in orange whenever
linking to network. The left hand side LED indicates the transfer mode and it lights in green
when data is transferring in 100Mbps (never lights while in 10Mbps), but lights in orange
when transferring in Gigabit’s mode. To enable or disable this function, you may simply
adjust it through BIOS.
+5V
SBD7-
SBD7+
GND
NC
+5V
SBD6-
SBD6+
GND
KEY
USB 2.0 Connector
1
Transferring (Left)
Green 100Mbps
Orange Gigabit mode
Linking (Right)
Orange
DDR Memory module
DIMMA1
DIMMA2
DIMMB1
DIMMB2
Warning: It is strongly
recommended not to
install a 3.3V AGP card,
which is not supported
by Intel 865G / 865PE /
848P chipset.
Pin 1

AOpen AX4SG-U Specifications

General

Brand	AOpen
Model	AX4SG-U
Category	Motherboard
Language	English