Overview
26
Table 3-1
Intel RAID Controller SRCU42X Headers and Connectors
Connector Description
Type
Comments
J1
Termination Enable Channel 0
3-pin header
Jumper on pins 1-2: Software uses
drive detection to control SCSI
termination (default: do not change).
Jumper on pins 2-3: Onboard SCSI
termination disabled.
No jumper: Onboard SCSI
termination enabled.
J2
Termination Enable Channel 1
3-pin header
J5
Internal SCSI Channel 0
Connector
68-pin connector
Internal high-density SCSI bus
connector.
J6
Internal SCSI Channel 1
Connector
68-pin connector
J7
External SCSI Channel 0
Connector
68-pin connector
External very high-density SCSI bus
connector.
J11
Onboard Cache LED
2-pin header
LED glows when the onboard cache
contains data and a write from the
cache to the hard drives is pending.
J12
BBU Daughter Card
40-pin header
Connector for an optional back-up
battery pack.
J13
SCSI Activity LED
2-pin header
Connector for enclosure LED to
indicate data transfers. Connection
is optional.
J14
External SCSI Channel 1
Connector
68-pin connector
External very high-density SCSI bus
connector.
J17
Termination Power Enable
Channel 0
2-pin header
Jumpered: Intel Raid SRCU42X
supplies termination power.
No jumper: SCSI bus provides
termination power.
J18
Termination Power Enable
Channel 1
2-pin header
J19
Onboard BIOS Enable
4-pin header
(two rows of two
pins each)
No jumper: BIOS enabled (default)
Jumper on pins 2/4: BIOS disabled
U6
DIMM Socket
DIMM socket
The Intel Raid SRCU42X supports
the following sizes of SDRAM: 32,
64, 128, 256, and 512 Mbytes, and
1 Gbyte.