Mainboard KX550
FAN Headers: CPUFAN, CHAFAN, SYSFAN1, SYSFAN2
There are four fan headers available for cooling fans. These cooling fans play an important role
in maintaining ambient temperatures in your system. The CPUFAN header is attached with a
CPU cooling fan. The CHAFAN, SYSFAN1 and SYSFAN2 headers are attached with other
cooling fans.
CHAFAN/ SYSFAN1/ SYSFAN2
CPUFAN
Memory Installation: DIMM1/2/3/4
The KX550 provides four DIMM (Dual In-Line Memory Modules) sockets with Dual Channel
Technology supported. The sockets allow you to install 240-pin, non-ECC & unbuffered DDR II
800 (PC2-6400)/ DDR II 667 (PC2-5300)/ DDR II 533 (PC2-4300)/ DDR II 400 (PC2-3200)
SDRAM, and support to install a total memory capacity of 8GB.
Attention
You can avoid damaging your CPU due to high temperatures with
proper cooling equipment. It is recommended that attach a cooling fan
on top of your CPU. Use the CPUFAN header to attach the fan cord.
On most fan power cord, the black wire of the fan cable is the “ground”
and should be attached to pin-1 of the header.
Attention
It is recommended that to install memories which are identical
specifications (same timing specifications and same DDR II speed) to
achieve the best effects. It may cause the failure of power-on or lower
memory speed if installing different type, SPD (series presence detects)
memories.
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