SOYO SY-KT400 Dragon Ultra User Manual page 21

Hardware Installation
FOC ( Fan-Off Control )
The newly designed SOYO "FOC" is based on the concept of total protection
for CPU, which is very different from currently seen on the market. The H/W
control function is used to see a passive security system of monitoring and
warning. S/W Simultaneous Signal Follow-ups techniques and Auto Power Off
System are included to prevent all possible damage caused by the
malfunctioning of the CPU fan. With the help of "O/S On Time Monitoring And
Warning" function, provided by the H/W monitoring system, the
double-protection purpose is achieved.
"FOC" includes the following functions:
(1) Simultaneous Signal Follow Ups: Before the system enters the O/S,
H/W will detect the signals of the CPU fan pins, get their revolution
information and send it to the BIOS.
(2) Auto Power Off System: If the BIOS receives the information of CPU
fan revolution, it continues to function normally. If no signal is received,
it will inform the system and disconnects the power supply immediately
to protect the CPU from overheating.
Note: The following must be observed to secure the normal functioning of
"Fan-Off Control":
1. FOC only works on CPUFAN 1.
2. CPU fan with sensor pins must be used.
3. CPU fans approved by AMD are strongly recommended.
The "HOT KEY" function is provided for the CPU fans without sensor pins, to
avoid the power off. Users may press the "Insert" key to jump over the "Power
Off" mode; go to the BIOS and disable "FOC". Now system can be booted
normally.
We provide the following user-friendly protection features:
1. Fan-Off Control: The motherboard detects the status of the CPU fan and
protects the CPU by automatically disconnecting the power supply. The
default value of this function is Enable. After booting up, the user may
disable it.
SY-KT400 DRAGON Ultra
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