Dell 4100 - Keyboard and Mouse Connectors; Keyboard Connector; Mouse Connector; Figure B-4. Pin Numbers for the Keyboard Connector

B-4 Dell PowerEdge 4100/180 and 4100/200 Systems User’s Guide
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 indus-
try-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 mouse detects the movement of a small ball
and relays the direction to the computer.
Mouse driver software can give the mouse priority with
the microprocessor by issuing IRQ12 whenever a new
mouse movement is detected. The driver software also
passes along the mouse data to the application program
that is in control.
Keyboard Connector
If you reconfigure your hardware, you may need pin num-
ber and signal information for the keyboard connector.
Figure B-4 illustrates the pin numbers for the keyboard
connector, and Table B-3 lists and defines the pin assign-
ments and interface signals for the keyboard connector.
Figure B-4. Pin Numbers for the Keyboard
Connector
Mouse Connector
If you reconfigure your hardware, you may need pin
number and signal information for the mouse connector.
Table B-2. Pin Assignments for the Parallel
Port Connector
Pin Signal I/O Definition
1 STB# I/O Strobe
2 PD0 I/O Printer data bit 0
3 PD1 I/O Printer data bit 1
4 PD2 I/O Printer data bit 2
5 PD3 I/O Printer data bit 3
6 PD4 I/O Printer data bit 4
7 PD5 I/O Printer data bit 5
8 PD6 I/O Printer data bit 6
9 PD7 I/O Printer 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 GND N/A Signal ground
Table B-3. Pin Assignments for the Keyboard
Connector
Pin Signal I/O Definition
1 KBDATA I/O Keyboard data
2 NC N/A No connection
3 GND N/A Signal ground
4 FVcc N/A Fused supply voltage
5 KBCLK I/O Keyboard clock
6 NC N/A No connection
Shell N/A N/A Chassis ground
shell
6
4
3
2
1
5