CHAINTECH CT-5SSV Manual page 22

Chapter 2
Power-on by Keyboard Jumper (JP3)
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PS/2 Mouse and Keyboard Ports
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Poly-fuse Over Current Protection
The poly-fuse protects the system from dangerous voltages the system might be
exposed to via the keyboard or USB connectors. In case of such exposure, the poly-
fuse will immediately be disconnected from the circuit, just like a normal fuse. After
being disconnected for a short period of time, the poly-fuse will return to its normal
state, after which the keyboard or USB can function properly. Unlike conventional
fuses, the poly-fuse does not have to be replaced, relieving the user of wasted time and
inconvenience.
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1
Default
This board is able to be turned on by the keyboard. To
use this function, enable the Power On By Keyboard
option in BIOS Power Management Setup screen . You
must also set this jumper cap to pins 2-3 to use this
function. Some out-of-date keyboards may require larger
current than supplied by the Suspend 5V of modern power
supplies. When using older keyboards disable this
function.
If a PS/2 mouse is used, BIOS will automatically detect
and assign IRQ12 to the PS/2 mouse.
P in
1
2
3
4
5
6
1
Enable
Definition
Data
No Connect
Ground
+5V (fused)
Clock
No Connect