Updated: Tuesday, February 18, 1997

Contents

• Jumper Locations and Definitions
• Microprocessor Configuration
• Motherboard Configuration
• Other Jumpers

Jumper Locations and Definitions

There are two jumper blocks on the AP440FX motherboard. The smaller jumper block at J1J1 defines the number of PCI slots (two or three slots) available on the riser board used with the motherboard. The larger jumper block (at J4L2) defines a range of microprocessor and motherboard configuration parameters. The drawing below shows the jumper block locations on the motherboard, and indicates how jumper placement corresponds to the value defined by the motherboard silk-screening.

Microprocessor Configuration (J4L2)

These allow the motherboard to be switched between different speeds of the Pentium Pro processor. These jumpers also affect the PCI and ISA clock speeds as shown in the table below:

Motherboard Configuration

The jumpers for sections D, E, F, G, and H of J4L2 allow the selection of various motherboard features. A second jumper block (J1J1) allows selection of a riser board with either two or three PCI board connectors. The table below lists the motherboard configuration jumper positions and indicates the meaning for each position.