Jumpers/Switches/Controls: Dell Dimension P75t, P90t, P100t, P133t Midsize

Jumpers | Switches | Controls | Connectors and Sockets


Jumpers

There are no internal configuration jumpers in this system.


Switches

System Board Layout

Switch Number/Name Setting Description
(8) CPU CLK1
(7) CPU CLK0
  Set according to the microprocessor's external speed.
  8 OFF
7 ON
The microprocessor's external speed is 50 MHz.
  8 OFF
7 OFF
The microprocessor's external speed is 60 MHz.
  8 ON
7 ON
The microprocessor's external speed is 66 MHz.
(6) CPU FREQ OFF The microprocessor’s internal speed is 1.5 times its external speed.
  ON The microprocessor’s internal speed is 2.0 times its external speed.
(5) SETUP OFF (default) Allows the user to enter the system setup program.
  ON Prevents the user from entering the system setup program.
(4) CMOS OFF (default) System setup settings are retained at next system boot.
  ON System setup settings are reverted to the defaults at
next system boot.
 (3) Password OFF (default)   Password feature is enabled
   ON  Password feature is disabled
 (2) VRE OFF  Processor voltage meets VR specification (3.3 V). Use this setting for 75- and 90-MHz systems.
   ON Processor voltage meets VRE specification (3.45 to 3.6 V). Use this setting for 100-MHz systems.
 (1) ISA Speed OFF (default)   Reserved - do not change.

 


Controls


Front Panel Layout

Power Button

The power button is a push-button on/off switch.

Power Indicator

The power indicator lights up when the system unit is on.

Reset Button

Pressing the reset button initiates a hardware reset. To avoid possible data or file structure corruption, use the reset button only when the system cannot be rebooted with the <CTRL-ALT-DEL> key combination, and close any open application programs or files if possible.

Hard-Disk Drive Access Indicator

The hard-disk drive access indicator lights up when the hard-disk drive is being accessed.

Diskette-Drive Access Indicators

The diskette-drive access indicators light up when the diskette-drive is being accessed.


Connectors and Sockets

Connector                                                                  
or Socket         Description
+FAN             Microprocessor cooling fan connector                         

BANK1 (2)        SIMM sockets                                                 
BANK0 (2)                                                                     

BH7D1            Battery socket                                               

COM1             Serial port 1 interface connector                            

COM2             Serial port 2 interface connector                            

FLOPPY           Diskette/tape drive interface connector                      
(also J8G1)                                                                   

HD LED           Hard-disk drive access indicator connector                   

J1K1, J2K1, J2K2 ISA expansion-card connectors                                

J3K1, J4K1, J5K1, PCI expansion-card connectors                                
J5K2                                                                           

J4C1             Cache-memory card connector                                  

J8M2             Power button connector                                       

J8N1             Mouse connector                                              

J9L1             Power input connector                                        

J9N1             Keyboard connector                                           

PARALLEL         Parallel port connector                                      

PRI IDE          Primary EIDE connector                                       

PWELED           Power indicator connector                                    

RST              Reset button connector                                       

SEC IDE          Secondary EIDE connector                                     

SPKR             Auxiliary speaker connector                                  

U3A1             Microprocessor socket                                        

U9H1, U9K1       Video-memory upgrade sockets                                 

VESA             Video feature connector