User manual AOPEN 6BCZ-HW

[. . . ] These settings exceed the specification of the ZX chipset, which may cause serious system damage. 2. 2. 2 Setting the CPU Voltage This motherboard supports Pentium II / Pentium III / Celeron VID function, the CPU core voltage is automatically detected, the range is from 1. 3V to 3. 5V. For overclocking, the CPU voltage also can be adjusted in the BIOS Setup. The CPU voltage is adjustable by going into: Chipset Features à CPU Voltage Set to However, note that enlarging the core voltage is probably harmful to your CPU. 2. 2. 3 Clearing the CMOS JP14 1-2 2-3 Clear CMOS Normal operation (default) Clear CMOS You need to clear the CMOS if you forget your system password. To clear the CMOS, follow the procedure below: JP14 123 JP14 123 Normal Operation (default) Clear CMOS 2-5 Hardware Installation The procedure to clear CMOS: 1. [. . . ] Except Auto setting, you may also set this jumper to 2/3 or 1/1. Below is a table for better understanding: CPU Type 66MHz 66MHz 66MHz 100MHz 100MHz 100MHz 100MHz 100MHz 100MHz 66/100 signal Low Low Low High High High High High High Bus clock 66MHz 100MHz 100MHz 100MHz 100MHz 100MHz 133MHz 133MHz 133MHz AGP clock 66MHz 100MHz 66MHz 66MHz 66MHz 100MHz 88. 6MHz 88. 6MHz 133MHz JP23 1-2 1-2 3-4 1-2 3-4 5-6 1-2 3-4 5-6 Warning: The specification of AGP is maximum 66Mhz clock. If the bus clock is larger than 66MHz, setting this 2-7 Hardware Installation item to Enabled may cause serious system damage. 2. 2. 5 KB/MS WKUP JP28 1-2 2-3 KB/MS WKUP Disabled Enabled This jumper is used to enable or disable the Keyboard/Mouse Power ON function. If you select Enabled, you may choose the wakeup mode from the BIOS Setup. To implement this function, the 5V Stand By current must be greater than 800mA. Note that only PS/2 mouse supports the Wake On Mouse function. JP28 1 2 3 1 2 3 JP28 Disabled Enabled 2-8 Hardware Installation 2. 3 Connectors 2. 3. 1 Power Cable The ATX power supply uses a 20-pin connector as shown below. Make sure you plug in the cable in the right direction. Caution: Make sure that the power supply is off before connecting or disconnecting the power cable. +5V 3. 3V 5V SB 3. 3V +5V PWR2 2. 3. 2 Fan Plug in the fan cable to the 3-pin fan connector onboard. The fan connector is marked CPUFAN1 and FAN1 on the system board. GND +12V SENSE CPUFAN1 FAN1 Note: Attach the fan cable to either the CPU FAN connector or the FAN connector. Both of these two fan connectors can support the hardware monitoring function. However, you can only use the CPU FAN connector to control the fan power ON/OFF. 2-9 Hardware Installation 2. 3. 3 PS/2 Mouse The onboard PS/2 mouse connector is a 6-pin Mini-Din connector marked PS2. The view angle of drawing shown here is from the back panel of the housing. PCB PS/2 Mouse 2. 3. 4 Keyboard The onboard PS/2 keyboard connector is a 6-pin Mini-Din connector marked KB2. The view angle of drawing shown here is from the back panel of the housing. PCB PS/2 KB 2. 3. 5 Serial Devices (COM1/COM2) The onboard serial connectors are 9-pin D-type connectors on the back panel of motherboard. The serial port 1 connector is marked as COM1 and the serial port 2 connector is marked as COM2. PCB COM1 COM2 2-10 Hardware Installation 2. 3. 6 Printer The onboard printer connector is a 25-pin D-type connector marked PRINTER. The view angle of the drawing shown here is from the back panel of the housing. PRINTER PCB 2. 3. 7 USB Device You can attach USB devices to the USB connector. The motherboard contains two USB connectors, which are marked as USB. PCB USB 2-11 Hardware Installation 2. 3. 8 Floppy Drive Connect the 34-pin floppy drive cable to the floppy drive connector marked as FDC on the system board. 2 1 34 33 FDC 2. 3. 9 IDE Hard Disk and CD ROM This motherboard supports two 40 pin IDE connectors marked as IDE1 and IDE2. IDE1 is also known as the primary channel and IDE2 as the secondary channel. Each channel supports two IDE devices that make a total of four devices. In order to work together, the two devices on each channel must be set differently to master and slave mode. Either one can be the hard disk or the CDROM. The setting as master or slave mode depends on the jumper on your IDE device, so please refer to your hard disk and CDROM manual accordingly. [. . . ] Tip: To identify 2-clock and 4-clock SDRAM, you may check if there are traces connected to the golden finger pins 79 and 163 of the SDRAM. If there are traces, the SDRAM is probably 4-clock; Otherwise, it is 2-clock. Parity: This motherboard supports standard 64 bit wide (without parity) DIMM modules. SPD support: The BIOS will automatically detect DIMMs with SPD, and set to the appropriate timing. [. . . ]