SOYO SY-KT880 DRAGON 2 User Manual page 24

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
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