User`s guide

20 Intel® RAID Controller RS2SG244 Hardware User’s Guide
I2C Connector Pin-Out
Table 5. I2C Connector Pin-Out
PCI Interface
The Intel
®
RAID Controller RS2SG244 must be installed into a standard x8 or larger PCI
Express* slot that complies with the PCI Express Specification, Revision 2.0. The
controller is PCI Express* 1.0 compatible and is backward-compatible with x8 or larger
slots that are wired with x1, x2, and x4 PCI Express* lanes.
LED Headers
There are 3 2-pin right angled headers present on the board and these headers are used for
connection to external LED which indicate activity on any of the connected HDDs,
indicate fault on any of the connected HDDs and to indicate a pending write command.
9 VBB_DDR_MEM DDR/DDRII Power
10 GND Ground
11 P3V3_STBY 3.3V auxiliary power
12 GND Ground
13 SCL I2C Clock
14 GND Ground
15 SDA I2C Data
16 PFAIL_L Power Fail
17 GND Ground
18 BBE Battery Backup Enabled
19 BBSTROBE Battery Backup Strobe
20 BBSTATUS Battery Backup Status
Pin # Name Description
Pin Number Description
1 SMB_SAS_SES_SDA
2 GND
3 SMB_SAS_SES_SCL