Installing and Configuring Motherboard Options
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Main Power Connectors: J12, J13
The power supply connector is a twelve-pin male connector. Dual connectors from the
power supply can fit in only one direction.
On-Board SCSI BIOS and Drivers (Manufacturing Option)
Yukon HX motherboard comes with the optional on-board SCSI by using Adaptec AIC-
7860 PCI-to-UltraSCSI Controller Chip. All SCSI sequences are managed by the
PhaseEngine, a high performance on-chip 10 MIPS RISC processor. 8-bit UltraSCSI
technology, capable of transfer speeds of up to 20 MB/sec, maximizes I/O throughput
in high-performance PCs and workstations for optimal utilization of the 133 MB/sec PCI
local bus. The onboard SCSI is tested extensively over a large matrix of operating
systems, peripherals and systems to ensure a high degree of compatability and
reliability.
The PCI host interface on the SCSI supports the 32-bit PCI interface with the bus
master burst data transfer up to the maximum rate of 133 MB/sec. Data is parity
protected throughout its journey through the chip. The large 128-byte FIFO maximizes
DMA transfers and reduces system latencies.
SCSI Jumper Setting: J30
J30
SCSI
ON
ENABLE
OFF
DISABLE
SCSI LED: JP8
LED display for on-board SCSI. The light is on when the on-board SCSI is turned on.
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Connect the SCSI LED cable to pin 1 and pin 2 of the SCSI LED connector (JP8) if the
computer has a two position SCSI LED cable.