SUPER MICRO Computer 6012L-6 user manual Scsi Enable/Disable, Scsi Termination Enable/ Disable

SUPERSERVER 6012L-6 User’s Manual

SCSI Enable/Disable

The SCSI Enable/Disable jumper at JA4 allows you to enable or dis- able the onboard SCSI. The nor- mal (default) position is enabled. See the table on the right for jumper settings.

SCSI Termination Enable/ Disable

Jumpers JPA1 and JPA2 allow you to enable or disable termination for the SCSI connectors. Jumper JPA1 controls SCSI channel A and JPA2 is for SCSI channel B. The normal (default) setting is open to enable (teminate) both SCSI channels. See the table on the right for jumper set- tings.

PCI-X Bus Speed Setting

Jumpers P2 and JP4 are used to set the speed of the PCI-X bus. The default setting is PCI 66 MHz (the other settings are to support future PCI-X cards.) See the table on the right for jumper settings.

S C S I E na b le /D is a b le J um p e r S e tting s

(J A 4 )

Jumper
Position	Definition
Pins 1-2	Enabled
Pins 2-3	Disabled

S C S I C ha nne l T e rm ina tio n

E na b le /D is a b le

J um p e r S e tting s (J P A 1 , J P A 2 )

Jumper
Position	Definition
O pen	Enabled
Closed	Disabled

P C I-X S lo t B us S p e e d S e tting s

P in D e finitio ns (P 2 , J P 4 )

P2	JP4	Speed
Pins 1-2	Closed	33	MHz PC I
Pins 1-2	O pen	66	MHz PC I
Pins 2-3	Either (n/a)	66	MHz PC I-X
Pins 3-4	Either (n/a)	100		MHz PC I-X
Pins 4-5	Either (n/a)	133		MHz PC I-X

Default setting is 66 MHz PCI.

33 MHz PCI Enable/Disable

If you wish to use 33 MHz PCI cards, close J4 to force the 133 MHz PCI-X slot to run at 33 MHz. See the table on the right for jumper settings.

Note: if you force the slots to 33 MHz, you must set the PCI-X Bus Speed jumpers (above) to the low- est speed.

3 3 M H z P C I F orc e J um p e r S e tting s (J 2 9 /J P 4 )

Jumper
P osition	D efinition
O pen	N ormal
C losed	33 MHz PCI

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