SUPER MICRO Computer SUPER X5DLR-8G2+, SUPER X5DL8-GG user manual PCI-X Bus Speed Setting X5DL8-GG

Chapter 2: Installation

PCI-X Bus Speed Setting (X5DL8-GG)

Jumpers P1, P2, S1 and S2 are used to change the speeds for the four PCI-X buses. See the table on the right for jumper settings.

PCI-X Buses:

S1: Bus for PCI-X slot #1 and SCSI

P1: Bus for PCI-X slots #2 and #3

S2: Bus for PCI-X slots #4 and #5

P2: Bus for PCI-X slot #6 and LAN2

Note: If two cards are used in slots that share a bus, both slots will run at 100 MHz (maximum).

PCI-X Bus Speed Setting (X5DLR-8G2+, X5DLR-8G2)

Jumper P2 is used to change the speed of the single PCI-X bus on the motherboard. See the table on the right for jumper settings.

Note: The PCI-X bus is also tied to the SCSI controller. If using a 33/66 MHz PCI card in this slot, you will slow the SCSI speed down to 33 or 66 MHz.

33 MHz PCI Enable/Disable (X5DL8-GG)

If you wish to use 33 MHz PCI cards, close J29 to force the P1 bus (slots 2 & 3) to run at 33 MHz. See the table on the right for jumper settings.

Note: if you force the slots(s) to 33 MHz, you must set the P1 bus speed jumpers (above) to the low- est speed.

PCI-X Slot Bus Speed Settings

Pin Definitions

(P1, P2, S1, S2)

Pin
Setting	Speed
Pins 1-2	PCI 33/66 MHz
Pins 2-3	PCI-X 66 MHz
Pins 3-4	PCI-X 100 MHz
Pins 4-5	PCI-X 133 MHz

Default setting is PCI-X 100 MHz for all

slots.

PCI-X Slot Bus Speed Settings

Pin Definitions

(P2)

Pin
Setting	Speed
Pins 1-2	PCI 33/66 MHz
Pins 2-3	PCI-X 66 MHz
Pins 3-4	PCI-X 100 MHz
Pins 4-5	PCI-X 133 MHz

This slot was designed for use with

PCI-X cards - some PCI cards may work

in the slot.

33 MHz PCI

Enable/Disable

Jumper Settings

(J29)

Jumper
Position	Definition
Open	Normal
Closed	33 MHz PCI

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