2.6.3 PCI slots

This motherboard implements the PCI-X (Peripheral Component Interconnect Extended) bus technology to support up to 133MHz data transfers, or about 1.06GB/s. This bus technology is primarily designed for servers to increase the performance of high bandwidth devices such as Gigabit Ethernet cards and Ultra320 SCSI interfaces. PCI-X is backward compatible with the earlier PCI bus technology making it possible to install PCI and PCI-X cards at the same time, but the bus speed will be that of the slowest card. The following figure shows the five PCI-X slots and one PCI slot on the motherboard.

PCI-X1

PCI-X2

PCI-X3

PCI-X4

PCI-X5

PCI6

PCI-X slots (PCI X1 to X5)

The motherboard comes with the LSI® 53C1030 SCSI controller. The following table shows the varying bus speeds for the PCI-X slots according to the PCI-X specification 1.0a.

PCI-X Slot

 

PCI-X2 to

 

 

PCI-X1

PCI-X5

Onboard

PCI-X4 *

SCSI

 

 

 

53C1030

64-bit/133MHz PCI-X

64-bit/66MHz PCI-X

64-bit/100MHz PCI-X**

 

 

64-bit/100MHz PCI-X

 

 

 

64-bit/133MHz PCI-X

 

 

 

 

 

*Plugging in a card into one of the slots allow for 133MHz bus speed. Plugging in two cards reduces the bus speeds to 100MHz for both cards. Plugging in three cards allows for 66MHz for all three cards.

**PCI-X5 supports the LSI MegaRAID 320-0 or Intel SRC ZCR (Zero Channel RAID) card.

PCI slot (PCI6)

PCI6 is a 32-bit/33MHz 5V PCI slot with a Low Pin Count (LPC) signal connector to accommodate the ASUS Server Management Card. This slot has the same specifications regardless of the onboard SCSI controller.

ASUS PR-DLS533 motherboard user guide

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