Dell PERC 4/DC - Manual (Page 56)

PERC 4/DC Jumpers and Connectors
Figure 3-2. PERC 4/DC Controller Layout
Table 3-2. PERC 4/DC Jumper and Connector Descriptions
With jumper in = Disabled
J5 SCSI Activity 2-pin header Connector for enclosure LED to indicate data transfers. Connection is optional.
J6 Serial Port 3-pin header Connector is for diagnostic purposes.
Pin-1 RXD (Receive Data)
Pin-2 TXD (Transmit Data)
Pin-3 GND (Ground)
J7 External SCSI connector 68-pin
connector
External very-high density SCSI bus connector.
Connection is optional.
J9 SCSI bus TERMPWR Enable 2-pin header Install jumper to enable onboard termination power. Default is installed.
J10 SCSI bus Termination
Enable
3-pin header Jumper pins 1-2 to enable software control of SCSI termination through drive detection.
Jumper pins 2-3 to disable onboard SCSI termination.
Having no jumper installed enables onboard SCSI termination. The default is no jumper
installed.
D12 - D19 LEDs Indicate problems with the card.
Connector Description Type Settings
J1 I2C Header 4-pin header Reserved.
J2 SCSI Activity LED 4-pin header Connector for LED on enclosure to indicate data transfers. Optional.
J3 Write Pending Indicator
(Dirty Cache LED)
2-pin header Connector for enclosure LED to indicate when data in the cache has yet to be written to the
device. Optional.
J4 SCSI Termination Enable
Channel 1
3-pin header Jumper pins 1-2 to enable software control of SCSI termination via drive detection.
Jumper pins 2-3 to disable onboard SCSI termination.
No Jumper installed enables onboard SCSI termination. (See J17 and J18). The default is no
jumper installed.
J5 SCSI Termination Enable
Channel 0
3-pin header
J6 DIMM socket DIMM socket Socket that hold the memory module
J7 Internal SCSI Channel 0
connector
68-pin
connector
Internal high-density SCSI bus connector. Connection is optional.
J8 Internal SCSI Channel 1
connector
68-pin
connector
J9 External SCSI Channel 0
connector
68-pin
connector
External very-high density SCSI bus connector. Connection is optional.
J10 Battery connector 3-pin header Connector for an optional battery pack.
Pin-1 -BATT Terminal (black wire)
Pin-2 Thermistor (white wire)
Pin-3 +BATT Terminal (red wire)
J11 NVRAM clear 2-pin header To CLEAR the configuration data, install a jumper.
J12 NMI jumper 2-pin header Reserved for factory.
J13 32-bit SPCI Enable 3-pin header Reserved for factory.
J14 Mode Select jumper 2-pin header
J15 Serial Port 3-pin header Connector is for diagnostic purposes.
Pin-1 RXD (Receive Data)