Parallel connector, Monitor connector – Dell Inspiron 3500 User Manual
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Parallel Connector
Use the 25-hole parallel connector to attach a parallel device to the computer. The parallel connector is used primarily for printers. The parallel port sends and receives
data in parallel format, where eight data bits (one byte) are sent simultaneously over eight separate lines.
The parallel port can also be configured for compatibility with the PS/2 standard. Support for the EPP feature improves network adapter performance (adapters
connect to the computer's parallel port and require the appropriate software drivers from the adapter's manufacturer).
If you reconfigure your hardware, you may need pin number and signal information for the serial connector.
Pin Assignments for the Parallel Connector
Monitor Connector
Use the 15-pin monitor connector to attach an external monitor to the computer.
Pin Assignments for the Monitor Connector
4
DTR
O
Data terminal ready
5
GND
N/A
Signal ground
6
DSR
I
Data set ready
7
RTS
O
Request to send
8
CTS
I
Clear to send
9
RI
I
Ring indicator
Shell
N/A
N/A
Frame ground
Pin
Signal
I/O
Definition
1
STB#
I/O
Strobe
2
PD0
I/O
Parallel data bit 0
3
PD1
I/O
Parallel data bit 1
4
PD2
I/O
Parallel data bit 2
5
PD3
I/O
Parallel data bit 3
6
PD4
I/O
Parallel data bit 4
7
PD5
I/O
Parallel data bit 5
8
PD6
I/O
Parallel data bit 6
9
PD7
I/O
Parallel data bit 7
10
ACK#
I
Acknowledge
11
BUSY
I
Busy
12
PE
I
Paper end
13
SLCT
I
Select
14
AFD#
O
Automatic feed
15
ERR#
I
Error
16
INIT#
O
Initialize printer
17
SLIN#
O
Select in
18–25
N/A
N/A
Signal ground
Shell
N/A
N/A
Frame ground