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Intel® RAID Controller SRCSAS144E Hardware Guide 10
A SATA connector consists of a signal connector and a power connector. The SAS
connector adds a bridge (primary physical link) between the signal connector and the
power connector. This means SAS backplane connectors can accept either drive type, but
SATA backplane connectors can ONLY accept SATA drives. Figure 3 shows these
connectors.
Figure 3. SAS and SATA Plugs and SAS Backplane Connector
Serial A TA
Physical
Link
SAS Primary
Physical Link
Power
SATA
Physical Link
Power
Serial Att ached SCSI
SAS Backplane
Recept acle Connector
Note: SA TA backplane connectors
will NOT accept SAS drives
Power
SAS Secondary
Physical Link
SATA/SAS
Primary
Physical Link