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14 pin IDC male connector layout
Разъем 14 pin IDC male
Dell Optiplex Internal Serial Port-3.3V Signaling



Pin Name

1 In Input(DCD?)
2 Vcc +5VDC
3 In Input(DSR?)
4 Vdd +12VDC
5 In Rx Data
6 N/C No Connect
7 Out Output(RTS?)
8 Vss -12VDC
9 Out Tx Data
10 In Detect
11 In Input(CTS?)
12 Gnd Ground
13 Out Output(DTR?)
14 In Input(RI?)

Detect(pin 10) must be grounded for BIOS to enable port.

Data Signals are 3.3V.

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