J8 Hard Disk LED

J8 is a four-pin connector that attaches to a cable that connects to the hard disk light emitting diode (LED) mounted on the computer enclosure. The LED indicates data transfers.Table 8-5 shows the pinout for J8.

Ta b l e 8 - 5 . J 8 H a r d D i s k L E D

Pin

Description

 

 

1

VCC through pull-up

 

 

2

SCSI activity signal

 

 

3

SCSI activity signal

 

 

4

VCC through pull-up

 

 

J10 Term Power

J10 is a 2-pin jumper. The factory setting is pins 1-2 shorted. Pins 1-2 should always be shorted for J10 to enable onboard term power.

J15 RUBI Slot Interrupt Steering

J15 is a 3-pin jumper. You can short the pins for a standard PCI slot or a PCI RUBI slot. The default is to have the jumper installed to short pins 1 and 2. Table 8-6 shows the pinout for J15.

Ta b l e 8 - 6 . J 1 5 R U B I S l o t I n t er r u p t S t e er i n g

Short… For…

Pins 1-2 Standard PCI slot (default)

Pins 2-3 PCI RUBI slot

PERC 3/SC Hardware Installation

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Dell 3 manual J8 Hard Disk LED, J10 Term Power, J15 Rubi Slot Interrupt Steering, Ta b l e 8 5 . J 8 H a r d D i s k L E D