Intel P4304XXMFEN2 Service Manual page 63

Intel ® Server Chassis P4304XXMFEN2/P4304XXMUXX Product Family System Integration and Service Guide
On each backplane, connect one miniSAS HD cable to the connector labled as "HDD_0-3". Connect
the "HSBP_I2C" header on the server board to the "I2C_IN" header on the first backplane. Connect
the "I2C_OUT" header on the first backplane to the "I2C_IN" header on the second backplane.
A "mini SAS HD to mini SAS HD" cable example is shown as below.
The two backplanes are cascaded with an I2C cable as below.
MiniSAS
(SVRBD/HSBP)
XXXXXX-XXX
XX YYWW
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