Hardware Configuration Features B-127
Parallel Port Connector
If you reconfigure your hardware, you may need pin
number and signal information for the parallel port con-
nector. Figure B-4 illustrates the pin numbers for the
parallel port connector, and Table B-4 lists and defines
the pin assignments and interface signals for the parallel
port connector.
Figure B-4. Pin Numbers for the Parallel Port
Connector
Keyboard and Mouse Connectors
The system uses a Personal System/2 (PS/2)-style key-
board and supports a PS/2-compatible mouse. Cables
from both devices attach to 6-pin, miniature Deutsche
Industrie Norm (DIN) connectors on the back panel of your
computer. The keyboard connector is on the bottom; the
mouse connector is on the top.
A PS/2-compatible mouse works identically to an industry-
standard serial mouse or bus mouse except that it has its
own dedicated connector, which frees up both serial ports
and does not require an expansion card. Circuitry inside the
Table B-3. Pin Assignments for the Serial Port
Connectors
Pin Signal I/O Definition
1DCD IData carrier detect
2SIN ISerial input
3SOUT OSerial output
4DTR OData terminal ready
5GND N/A Signal ground
6DSR IData set ready
7RTS ORequest to send
8CTS IClear to send
9RI IRing indicator
Shell N/A N/A Chassis ground
1 — 13
14 — 25
Table B-4. Pin Assignments for the Parallel Port
Connector
Pin Signal I/O Definition
1STB# I/O Strobe
2PD0 I/O Printer data bit 0
3PD1 I/O Printer data bit 1
4PD2 I/O Printer data bit 2
5PD3 I/O Printer data bit 3
6PD4 I/O Printer data bit 4
7PD5 I/O Printer data bit 5
8PD6 I/O Printer data bit 6
9PD7 I/O Printer data bit 7
10 ACK# IAcknowledge
11 BUSY IBusy
12 PE IPaper end
13 SLCT ISelect
14 AFD# OAutomatic feed
15 ERR# IError
16 INIT# OInitialize printer
17 SLIN# OSelect in
18-25 GND N/A Signal ground