3Com IWILL DK8X - Manual (Page 18)

DK8X Motherboard
CN21: PCI 64-Bit Speed Select Jumper
This header lets you determine the bus speed of the PCI-X 64-bit slots. The speed can be
set to either 64 MHz (default) or 33 MHz
CN25: PCI-X Speed Select Jumper
This header lets you determine the bus speed of the PCI-X slots. The speed can be set to
either 133 MHz (default) or 100 MHz.
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2-4 Hardware Installation
1 2 3
1-2 2-3
66MHz 33MHz
1 2 3
1-2 2-3
PCI-X 133 PCI-X 100