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Pin Assignments for I/O Connectors 

Dell™ Latitude™ C400 Service Manual

Serial Connector USB Connector
Docking Connector IDE Module Bay Connector
Video Connector

 

Serial Connector 

Pin

 Signal

1

DCD

2

RXDA
3 TXDA
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI

Docking Connector 

Pin

 Signal

1

STRB#/5V

2

PD0
3 PD1
4 PD2
5 PD3
6 PD4
7 PD5
8 PD6
9 PD7
10 GND
11 DOCK_SPKR
12 DOCK_MIC
13 DOCK_LINE
14 DOCK_CDROM
15 GND
16 NC
17 POWER_SW#
18 QPCIEN#
19 S1.6M_EN#
20 DFDD/LPT#
21 GND
22 NC
23 NC
24 D_ACTLED
25 D_PWRLED
26 DOCK_PWR_SRC
27 DOCK_PWR_SRC
28 DOCK_PWR_SRC
29 GND
30 +5VDOCK
31 +5VDOCK
32 +5VDOCK
33 +5VDOCK
34 +5VDOCK
35 GND
36 DOCK_PWR_SRC
37 DOCK_PWR_SRC
38 DOCK_PWR_SRC
39 DOCK_PWR_SRC
40 GND
41 DOCK_+DC_IN
42 DOCK_+DC_IN
43 DOCK_+DC_IN
44 DOCK_+DC_IN
45 DOCK_+DC_IN
46 DOCK_+DC_IN
47 DOCK_+DC_IN
48 DOCK_+DC_IN
49 GND
50 LOW_PWR
Pin Signal
51 HSYNC
52 VSYNC
53 GND
54 DOCKED
55 USB_VD1+
56 USB_VD1-
57 GND
58 USB_VD2+
59 USB_VD2-
60 DOCKOC1#
61 RUN_ON#
62 GND
63 NC
64 DOCK_SCLK
65 DOCK_LRCK
66 DOCK_MCLK
67 GND
68 +12V
69 AFD#
70 ERROR#
71 ACK#
72 GND
73 INIT#
74 SLCT_IN#
75 BUSY
76 PE
77 SLCT
78 GND
79 DAT_SMB
80 DCLK_SMB
81 SMB_INIT#
82 GND
83 DAT_DOCKSM1
84 CLK_DOCKSM1
85 DAT_DOCKKBD
86 CLK_DOCKKBD
87 GND
88 RI0
89 CTS0
90 RTS0
91 DSR0
92 GND
93 DTR0
94 TXD0#
95 RXD0#
96 DCD0
97 NC
98 +5VSUS
99 NC
100 NC
Pin Signal
101 VGA_GRN
102 GND
103 VGA_RED
104 GND
105 VGA_BLU
106 DOCK_SD/MODE
107 D_IRTX
108 D_IRRX
109 GND
110 SPIRQB#
111 SPIRQC#
112 DAT_DDC2
113 CLK_DDC2
114 SPAR
115 SPME#
116 GND
117 SSERR#
118 SPERR#
119 SLOCK#
120 SSTOP#
121 GND
122 SDEVSEL#
123 STRDY#
124 SIRDY#
125 SFRAME#
126 SCLKRUN#
127 GND
128 SGNTA#
129 SREQA#
130 SGNT0#
131 SREQ0#
132 SPCIRST#
133 SH1SEL#
134 GND
135 SWRPRT#
136 SDSKCHG#/DRQ
137 SDIR#
138 STRK0#
139 SSTEP#
140 SDRV1#
141 GND
142 SMTR1#
143 SWRDATA#
144 SWGATE#
145 SRDATA#
146 SINDEX#
147 GND
148 NC
149 +5VALW
150 NC
Pin Signal
151 GND
152 CLK_SPCI
153 GND
154 SAD0
155 SAD1
156 SAD2
157 SAD3
158 SAD4
159 SAD5
160 SAD6
161 GND
162 SAD7
163 SAD8
164 SC/BE0#
165 SAD9
166 SAD10
167 SAD11
168 SAD12
169 GND
170 SAD13
171 SAD14
172 SAD15
173 SAD16
174 SC/BE1#
175 CD/BE2#
176 GND
177 SAD17
178 SAD18
179 SAD19
180 SAD20
181 SAD21
182 GND
183 SAD22
184 SAD23
185 SAD24
186 SC/BE3#
187 SAD25
188 GND
189 SAD26
190 SAD27
191 SAD28
192 SAD29
193 SAD30
194 SAD31
195 GND
196 NC
197 NC
198 NC
199 NC
200 GND

 

Video Connector 

Pin Signal

1

RED

2

GREEN
3 BLUE
4 NC
5 GND
6 GND
7 GND
8 GND
Pin Signal
9 CRT_VCC
10 GND
11 NC
12 DAT_DDC2
13 HSYNC
14 VSYNC
15 CLK_DDC2

USB Connector 

Pin

 Signal

1

VCC

2

–DATA
3 +DATA
4 GROUND

IDE Module Bay Connector

Pin

 Signal

1

 BAY_MODPRES#

2

 HDSEL#
3 RDATA#
4 WRPRT#
5 WRDATA#
6 INDEX#
7 DSKCHG#
8 1D6M_EN#
9 SIDE_IOW#
10 SIDED15
11 SIDED12
12 SIDED9
13 SIDE_CS3#
14 SIDE_CS1#
15 +5VMOD
16 IRQ15
17 +5VMOD
18 SIDED0
19 +5VMOD
20 SIDED3
21 +5VMOD
22 SIDED6
23 +5VMOD
24 SIDE_A2
25 +5VMOD
26 SIDE_DACK#
27 +5VMOD
28 SIDE_IOR#
29 +5VMOD
30 SIDED14
31 +5VMOD
32 SIDED11
33 +5VMOD
34 MOD_CD_R
Pin Signal
35 WGATE#
36 GND
37 MTR0#
38 STEP#
39 DRV0#
40 GND
41 DIR#
42 TRKO#
43 BAY_CD_FDD#
44 GND
45 SIDED1
46 SIDED4
47 SIDED7
48 GND
49 SIDEIORDY
50 GND
51 SIDE_DREQ
52 GND
53 SIDED13
54 SIDED10
55 IDE_RST_MOD_5V#
56 GND
57 SIDEACT#
58 SIDE_A1
59 SIDE_A0
60 GND
61 SIDE_CSEL_SEC#
62 SIDED2
63 SIDED5
64 GND
65 SIDED8
66 MOD_CL_L
67 CDGND
68 BAY_MODPRES#

 

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