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Step 4 Connect the Power Supply,
P2 Pinout
P7 Pinout
Step 5 Connect the Keyboard Cable
The keyboard connector is a 5-pin DIN socket labeled KEYBRD and P3 on the motherboard. Attach a standard AT-
compatible keyboard cable. A 5-pin DIN to 6-pin mini DIN converter is needed to connect a PS/2-type keyboard.
Excalibur PCI Pentium ISA Motherboard User's Guide
Pin
1
Ground (Black wire)
2
Ground (Black wire)
3
-5 Volts (White wire)
4
+5V VCC (Red wire)
5
+5V VCC (Red wire)
6
+5V VCC (Red wire)
Pin
1
3.3V Vcc
2
3.3V Vcc
3
3.3V Vcc
4
Ground (Black wire)
5
Ground (Black wire)
6
Ground (Black wire)
Pin
Assignments
1
Keyboard clock
2
Keyboard data
3
Not used
4
Ground
5
VCC
Continued
Description
Description
41
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