
Table 3-1.PERC4/SCJumperandConnectorDescriptions
Figure 3-2. PERC 4/DC Controller Layout
Table 3-2.PERC4/DCJumperandConnectorDescriptions
Internal high-density SCSI bus connector.
Connection is optional.
To CLEAR configuration data, install a jumper.
To CLEAR configuration data, install a jumper.
No jumper = Enabled (Default is Enabled)
With jumper in = Disabled
Connector for enclosure LED to indicate data transfers. Connection is optional.
Connector is for diagnostic purposes.
Pin-1 RXD (Receive Data)
Pin-2 TXD (Transmit Data)
Pin-3 GND (Ground)
External very-high density SCSI bus connector.
Connection is optional.
Install jumper to enable onboard termination power. Default is installed.
SCSI bus Termination Enable
Jumper pins 1-2 to enable software control of SCSI termination through drive detection.
Jumper pins 2-3 to disable onboard SCSI termination.
No jumper installed enables onboard SCSI termination. This is the default.
Indicate problems with the card.
Connector for LED on enclosure to indicate data transfers. Optional.
Connector for enclosure LED to indicate when data in the cache has yet to be written to the
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