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Jumpers
Several hardware settings are made through the use of jumper caps to connect jumper pins on
the main board. The jumper's pin 1 on main board will be on the top or on the left when hold-
ing the main board with the keyboard connector away from yourself.
Jumpers with two pins will be shown as for Close (On) and for Open (Off).
To connect the pins, simply place a plastic jumper cap over the two pins.
CPU Clock Speed Selection - JP5
HOT-683 featuring CPU Plug & Play function, the user needn't to adjust onboard system clock
and CPU multiplier.
HOT-683 mainboard features a clock generator to provide adjustable system clock frequency.
JP5 is a 6-pin jumpers which determine the system clock frequency 50 MHz to 83 MHz.
HOT-683 mainboard does not provide any jumper to figure the CPU multiplier since the
multiplier adjusting function is not available on PPGA Celeron.
Figure 2-3 shows the position of JP5 on the mainboard. Table 2-1 shows adjustable System
clock on jumper JP5.
Figure 2-3
System Clock
(JP5)
1-2
3-4
5-6
50 MHz
ON
ON
ON
60 MHz
ON
OFF
OFF
66 MHz
OFF
OFF
OFF
75 MHz
OFF
ON
OFF
83 MHz
ON
OFF
ON
Table 2-1
