Acrosser AR-B1690 - Manual (Page 17)

AR-B1690 User’s Guide
17
2.2.17 CPU Setting System Bus Clock (SW1)
The table below shows the correct setting to match the CPU frequency.
OFF
1 2 3 4
1 2 3 4 CPU PCI
OFF OFF OFF OFF 133 33.3
ON OFF OFF OFF 124 31
OFF ON OFF OFF 150 37.5
ON ON OFF OFF 140 35
OFF OFF ON OFF 105 35
ON OFF ON OFF 110 36.6
OFF ON ON OFF 115 38.3
ON ON ON OFF 120 40
OFF OFF OFF ON 100 33.3
ON OFF OFF ON 133 44.3
OFF ON OFF ON 112 37.3
ON ON OFF ON 103 34.3
OFF OFF ON ON 66 33 (Factory Preset)
ON OFF ON ON 83 41.6
OFF ON ON ON 75 37.5
ON ON ON ON 124 41.3
2.2.18 Compact Flash Connector (CF1)
Caution: Please avoid using Compact Flash Card and Secondary Devices (IDE2), Such as CD/DVD-ROM, HDD
or CD/DVD-writer, at the same time because CF Card and Secondary connector (IDE2) use the same as I/O
address on the motherboard, it will cause hardware conflict or it will cause hardware crash.
2.2.19 CD IN Connector (CD1)
1 2 3 4
2.3.GND
1.CDINL
4.CDINR
2.2.20 CPU Fan Power Connector (FAN1, FAN2)
FAN1 and FAN2 are 3-pin header for the CPU fan. The fan must be a 12V fan.
2 5 4 1 3
1. GND
2. +12V
3. Fan Speed