CHAINTECH 5SSV, Manual

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Chapter 2
18
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1 1
Default Enable
Power-on by Keyboard Jumper (JP3)
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 Some out-of-date keyboards may require larger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.
PS/2 Mouse and Keyboard Ports
If a PS/2 mouse is used, BIOS will automatically detect
and assign IRQ12 to the PS/2 mouse.
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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Pin Definition
1 Data
2 No Connect
3 Ground
4 +5V (fused)
5 Clock
6 No Connect