Figure 23. Internal Sas Expander Location - Intel JBOD2312S3SP Hardware Manual

Provides a low-latency connection router to efficiently create and maintain connections
-
Supports T10-Based and Phy-Based Zoning for storage partitioning
-
Allows any number of phys to be included in a wide port
-
Provides up to 12 I2C interfaces
-
Flash ROM – A 128-Mbit Quad SPI flash ROM is used to accommodate expander card firmware.

Heartbeat LED – A green LED provides a heartbeat with a 1 second blink rate to indicate the expander

has booted properly.
All JBOD SKUs use the 36-port SAS expander card. Single-port JBOD2000S3SP SKU has one 36-port SAS
expander card.
See the Intel ® RAID Expander RES3FV288 User Guide at
28
Intel® Storage Server System JBOD2312S3SP Hardware Guide

Figure 23. Internal SAS Expander Location

.
www.intel.com