American Megatrends MegaPlex II, Системное руководство

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Megaplex Quad Pentium II Xeon PCI ISA System Guide 38
Step 7 Attach Connectors,
Continued
J35 Keyboard Lock J35 is a five-pin single-inline berg that is attached via a cable to the
keyboard lock connector. The computer chassis may not include the keyboard
lock and Power LED on a single connector. The keyboard lock allows you to
lock the keyboard.
Pin Description
1 LED power
2 LED power
3 GND
4 Keyboard Lock
5 GND
J4 Keyboard Frontside Header J4 is an extension of the keyboard/mouse connector and can be
used for additional frontside keyboard and mouse sockets. The pinout is:
Pin Signal Description Pin Signal Description
1 Keyboard Data 6 Mouse Data
2 Keyboard Clk 7 Mouse Clock
3 Keyboard GND 8 Keyboard GND
4 +5 V 9 +5 V
5 Keyboard GND-2 10 Keyboard GND-2
J38 Speaker Connector J38 is a four-pin single-inline berg attached via a cable to a standard
system speaker. AMIBIOS signals hardware problems through the speaker.
Pin Description
1 Data Out
2 GND
3 N/C
4 GND
J21 Chassis Intrusion Connector J21 is a 2-pin berg which should be connected by a cable to a
NC (Normally Closed) switch on the chassis. The internal circuitry, when
activated, monitors the state of the chassis, and informs the administrator if the
chassis is opened.
Cont’d