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da questo dispositivo ha anche altre istruzioni :
Notebook - Latitude C840 (2.08 mb)
Notebook - Latitude C840 (1.44 mb)
Notebook - Latitude C840 (3.96 mb)
Notebook - Latitude C840 (999.31 kb)
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Pin Assignments for I/O Connectors
Dell™ Latitude™ C840 Service Manual
USB Connector
Pin
Signal
1
VCC
2
-Data
3
+Data
4
Ground
Serial Connector
Pin
Signal
Pin
Signal
1
DCD
6
DSR
2
RXDA
7
RTS
3
TXDA
8
CTS
4
DTR
9
RI
5
GND
Parallel Connector
Pin
Signal
Pin
Signal
1
STRB#
11
BUSY
...