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Acer V55LA-2 Motherboard

Jumper and Connector Layout

v55laii board diagram

CPU Jumper Settings

 SW2 Settings
CPU FreqHost Bus Freq.1234JP7JP43JP44
Intel P54C P16666OFFONONONClosed2-32-3
Intel P54C P20066OFFONOFFONClosed2-32-3
Intel P55C P15060ONOFFONONOpen2-32-3
Intel P55C P16666OFFONONONOpen2-32-3
Intel P55C P20066OFFONOFFONOpen2-32-3
Intel P55C P23366OFFONOFFOFFOpen2-32-3
AMD K6 PR16666OFFONONONOpen2-31-2
AMD K6 PR20066OFFONOFFONOpen2-31-2
AMD K6 PR23366OFFONOFFOFFOpen2-31-2

SW2 Settings

SwitchSettingFunction
Sound Feature
Switch 5
ON
OFF
Onboard sound chip disabled
Onboard sound chip enabled
Password Security
Switch 6
ON
OFF
Password bypass
Password check

Jumper Settings

JumperSettingFunction
JP1 BIOS Type1-2
2-3
For models with Acer BIOS
For models with OEM BIOS
JP2 LED Function1-2
2-3
LED for IDE and FDD
LED for IDE only
JP3, JP4 Second-level Cache 1-2, 1-2
1-2, 2-3
2-3, 2-3
256 KB
512 KB
1 MB
JP7 RegulatorClosed
Open
For single-voltage CPUs (P54C, K5, M1)
For dual-voltage CPUs (P55C, K6, M2)
JP11 SMM/Reset Switch1-2
2-3
CN19 pins 19-20 support SMM switch
Reserved
JP16 Software Shutdown1-2
2-3
UPS enabled
UPS disabled
CPU Voltage
JP43 (for I/O)


JP44 (for core)

1-2
2-3

1-2
2-3


3.5V
3.3V

3.2V
2.8V

Connector Functions

ConnectorFunction
CN1Feature connector for multimedia or Ethernet solution
CN2CD-audio line-in connector
CN3Power connector
CN5USB Connector
CN6WaveTable connector
CN7PS/2 keyboard connector
CN8PS/2 mouse connector
CN9Audio I/O board connector
CN10Diskette drive connector
CN11IDE connector 2
CN12IDE connector 1
CN13Serial port 1
CN14Serial port 2
CN17Parallel port
CN18CPU fan connector
CN19Multifunction connector
CN21Video port
CN22Fax/modem connector
CN23ATI multimedia connector (AMC)
CN31Internal line-in connector
JP10*Hard disk and diskette drive LED connector
JP14*Power-on switch connector (pins 1-2)
JP15Standby power connector
JP30External battery connector
JP48**Hard disk and message LED (pins 1-3-5)
Power LED (pins 2-4-6)
JP30Power-on switch connector**

* For generic version system board only.
** For Aspire version system board only.

Memory Upgrade

The system memory is upgradable to a maximum of 128MB via 72 pin SIMM sockets on board. These SIMM sockets accept 32MB, 60ns-70ns fast-page or EDO-type DRAM modules in capacities of 4-, 8-, 16-, and 32MB. Important: Do not mix EDO and fast-page mode DRAM in one configuration. Install only the same type of SIMMS in a bank.


BIOS

How do I enter the BIOS Setup Utility?

You can access the BIOS Setup Utility by pressing CTRL+ALT+ESC as the system is booting. At the bottom of the second start up screen you should see "To enter setup, press CTRL_ALT_ESC".

Note: If the system displays the Acer Splash Screen, once you hear the beep, you should begin pressing CTRL+ALT+ESC.You may need to press CTRL+ALT+ESC continuously until you access the BIOS setup screen.

Why do the USB ports on my Acer Aspire system not work?

Your Aspire system was produced during the very early stages of USB. We were ahead of the technology and installed USB ports in anticipation of USB standards being released. However those standards, and the support for USB was not available at the time your system was released. Therefore, the USB ports do not function and will not support USB devices.