Dell PERC 4/DC - Manual (Page 12)

Figure 3-3. PERC 4e/DC Controller Layout
Table 3-3. PERC 4e/DC Jumper and Connector Descriptions
(Dirty Cache LED) 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). This is the default.
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
Internal high-density SCSI bus connector. Connection is optional.
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)
Pin-2 TXD (Transmit Data)
Pin-3 GND (Ground)
J16 Onboard BIOS Enable 2-pin header No jumper = Enabled (Default setting)
Jumpered = Disabled
J17 TERMPWR Enable Channel 0 2-pin header Jumper installed enables TERMPWR from the PCI bus. Default setting.
No jumper installed enables TERMPWR from the SCSI bus. (See J4 and J5) J18 TERMPWR Enable Channel 1 2-pin header
J19 External SCSI Channel 1
connector
68-pin
connector
External very-high density SCSI bus connector. Connection is optional.
J23 Serial EEPROM 2-pin header To CLEAR configuration data, install a jumper.
D17 - D24 LEDs (located on back of card) Indicate problems with the card.
Connector Description Type Settings
J1 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.
J2 Onboard BIOS Enable 2-pin header No jumper = Enabled (Default setting)
Jumpered = Disabled
J4 I2C Header 3-pin header Reserved
J5 SCSI Termination Enable
Channel 0
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). This is the default.
J6 SCSI Termination Enable
Channel 1
3-pin header
J7 Serial Port (RS232) 3-pin header Connector is for diagnostic purposes.
Pin-1 RXD (Receive Data)
Pin-2 TXD (Transmit Data)
Pin-3 GND (Ground)