User manual AOPEN AX53-2

[. . . ] The notched corner on the CPU indicates the location of pin 1. Pin 1 indicator 3. Pull down the socket lever to lock the CPU into the socket. 2-4 Hardware Installation 4. Attach the heatsink and fan to the CPU. 5. Plug the fan cable to the two-pin fan connector onboard. The fan connector is marked CN5 on the system board. GND GND 2-pin fan power connector (J2) 2-5 Hardware Installation 6. [. . . ] 3. 2-11 Hardware Installation 2. 7 Customizing your Hardware Setup You may customize your hardware setup according to the desired system performance. See the figure in section 2. 2 for the location of the jumpers on the system board. The following sections tell how to configure the system board to meet the desired performance: 2. 7. 1 Enabling the ATX Power Supply The AX53 board comes with two power connectors to support both PS/2 and ATX power supplies. To switch to PS/2 power supply, reset JP1 to 1-2. ATX Power Supply Power OFF JP1 Power ON (default) 2. 7. 2 Selecting the Cache Size The AX53 supports 256-KB and 512KB pipelined-burst cache. If your board comes with a 256-KB onboard cache, JP7 is preset by the manufacturer to 1-2. To upgrade your cache to 512 KB via cache upgrade socket, change the setting of JP7 to 2-3. If your board comes with a 256-KB pipelined-burst cache, JP7 presetting is 2-3. JP7 256-KB 512-KB 2-12 Hardware Installation 2. 7. 3 Selecting the Cache Module Type The onboard cache upgrade socket allows you to upgrade your cache from 256 KB to 512 KB. This cache socket accepts 256-KB cache module with or without Tag RAM. If you install a module without Tag, set JP16 to 2-3. JP16 Module without Tag Module with Tag (default) 2. 7. 4 Disabling the Onboard Super I/O Controller The board is preset by the manufacturer with the onboard I/O controller enabled. In case you wish to use an external I/O controller, you need to disable the onboard I/O before the external I/O card functions. To disable, you need to reset jumper JP12 to 2-3. JP12 Enabled (default) Disabled 2-13 Hardware Installation 2. 7. 5 Disabling the PS/2 Mouse Function The PS/2 mouse function is normally enabled and occupies IRQ12. To reassign IRQ12 to another function, you need to disable the PS/2 mouse function by opening jumper JP14 and changing the BIOS setup. For detailed information on BIOS, see Chapter 3. JP14 Enabled (default) Disabled 2. 7. 6 Setting the Keyboard Clock The jumper JP15 enables you to set the keyboard clock. Reset it to 3-4 to set the keyboard clock to 12 MHz. JP15 ISA clock (default) 12 MHz 2-14 Hardware Installation 2. 7. 7 Clearing the CMOS You need to clear the CMOS if you forget your system password. To do this, shut off the system power and short pins 2-3 of JP9 for a few seconds. Enter Setup to specify a new password. JP9 Normal (default) Clear CMOS 2. 8 Upgrading the Second-level Cache Observe ESD precautions when installing components. The system board comes with either 256KB pipelined-burst second-level cache and a cache upgrade socket, or 512-KB pipelined burst cache. The cache upgrade socket accepts a 256-KB pipelined-burst cache module; therefore, allowing you to to upgrade the secondlevel cache to 512 KB. To upgrade, simply insert the cache module into the cache socket. 2-15 Hardware Installation 2. 9 Installing the System Board Make sure that you have already installed the system board components like the CPU and memory, and have set the appropriate jumpers before you proceed. Refer to the housing documentation for steps on how to remove the housing cover. Install the board into the housing and secure it with the screws that come with the housing. [. . . ] Refer to the figure. Printer 2-19 Hardware Installation 2. 10. 6 IDE Devices Primary IDE Connector The primary IDE connector marked CN10 on the system board supports two IDE devices - one IDE hard disk and one additional IDE device. If you have other IDE device to install in your system, connect it to the slave port. HDD 1 Master port HDD 2 Slave port Secondary IDE Connector The secondary IDE connector is marked CN9 on the board. To install an IDE CD-ROM drive into your system, insert master port of the secondary IDE cable into the CD-ROM drive connector. [. . . ]