B&B Electronics PC Watchdog Timer Card ATXWDT Instrukcja Użytkownika Strona 26

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INSTALLATIONS
22 MB800 Users Manual
J19: USB Connector
J19 connector will support the 3rd and 4th USB ports.
Signal Name Pin
Pin Signal Name
Vcc 1 5 Ground
USB2- 2 6 USB3+
USB2+ 3 7 USB3-
J19
Ground 4 8 Vcc
J20: System Function Connector
J20 provides connectors for system indicators that provide light
indication of the computer activities and switches to change the computer
status. J20 is a 20-pin header that provides interfaces for the following
functions.
Hard Disk Drive LED
Reset Switch
Not defined
ATX Power On Switch
Not defined
Power LED
Speaker
Speaker: Pins 1 - 4
This connector provides an interface to a speaker for audio
tone generation. An 8-ohm speaker is recommended.
Pin # Signal Name
1 Speaker out
2 No connect
3 Ground
4 +5V
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