Internal USB system board 1x5
connector
Pin Signal
1 +5V
2 USB-
3 USB
4 GND
5 (not keyed)
Workstation memory and chipset fan
connector
Pin Signal
1 Ground
2 +12V
3 Tach
4PWM
CPU fan system board connector Pin Signal
1 GND
2 +12V
3 Tach 1
4 PWM
5 Tach 2
Workstation FDD connector Pin Signal Pin Signal
1 Ground 18 FLP_DIR#
2 FLP_LOWDEN# 19 Ground
3 Key (no pin) 20 FLP_STEP#
4 FLP_WDO 21 Ground
5 Key (no pin) 22 FLP_WDATA#
6 Unused 23 Ground
7 Ground 24 FLP_WRTEN#
8 FLP_INDEX# 25 Ground
9 Ground 26 FLP_TRACK#
10 FLP_MOTOR# 27 Ground
152 Appendix A Appendix A—Connector pins ENWW
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