HP Z400 Maintenance And Service Manual page 241

CPU fan
FDD
ENWW
Pin Signal
1 GND
2 +12V
3 TACH1
4 PWM
5 TACH2
Pin Signal
1 Ground
2 FLP_LOWDEN#
3 Tach
4 FLP_WDO
5 MT
6 Unused
7 Ground
8 FLP_INDEX#
9 Ground
10 FLP_MOTOR#
11 Ground
12 Unused
13 Ground
14 FLP_SEL_A#
15 Ground
16 Unused
17 Ground
Pin Signal
18 FLP_DIR#
19 Ground
20 FLP_STEP#
21 Ground
22 FLP_STEP#
23 Ground
24 FLP_WRTEN#
25 Ground
26 FLP_TRACK#
27 Ground
28 FLP_WP#
29 Ground
30 FLP_RD_D#
31 Ground
32 FLP_HD_SEL#
33 Ground
34 FLP_DSKCHG#
229