Dell OptiPlex GX1 - Manual (Page 56)

Working Inside Your Computer: Dell OptiPlex GX1 Low-Profile Managed PC Systems
file:///C|/infodev/2013/eDoc/OpGX1/SQRG/computer.htm[2/21/2013 11:53:01 AM]
Jumpers
Jumpers are small blocks on a circuit board with two or more pins emerging from them. Plastic plugs
containing a wire fit down over the pins. The wire connects the pins and creates a circuit.
To change a jumper setting, pull the plug off its pin(s) and carefully fit it down onto the pin(s) indicated.
NOTICE: Make sure your system is turned off before you change a jumper setting. Otherwise,
damage to your system or unpredictable results may occur.
A jumper is referred to as open or unjumpered when the plug is pushed down over only one pin or if there is
no plug at all. When the plug is pushed down over two pins, the jumper is referred to as jumpered. In some
documents, the jumper setting may be shown in text as two numbers, such as 1-2. The number 1 is printed
on the circuit board so that you can identify each pin number based on the location of pin 1.
Figure 6 shows the location and default settings of the jumper blocks on your system board. See Table 1 for
the designations, default settings, and functions of your system's jumpers.
Figure 6. System Board Jumpers